A partial set of notes and Scriptures:

(Hebrews 3:14 Hebrews 3:14For we are made partakers of Christ, if we hold the beginning of our confidence steadfast to the end;
American King James Version×)  For we have become partakers of Christ if we hold the beginning of our confidence steadfast to the end,
(Hebrews 3:15 Hebrews 3:15While it is said, To day if you will hear his voice, harden not your hearts, as in the provocation.
American King James Version×)  while it is said: "TODAY, IF YOU WILL HEAR HIS VOICE, DO NOT HARDEN YOUR HEARTS AS IN THE REBELLION."
Steadfast = Courage, perseverance, GRIT.

TED talk on GRIT
https://www.ted.com/talks/angela_lee_duckworth_grit_the_power_of_passion_and_perseverance/up-next

(Jeremiah 11:18 Jeremiah 11:18And the LORD has given me knowledge of it, and I know it: then you showed me their doings.
American King James Version×)  Now the LORD gave me knowledge of it, and I know it; for You showed me their doings.
(Jeremiah 11:19 Jeremiah 11:19But I was like a lamb or an ox that is brought to the slaughter; and I knew not that they had devised devices against me, saying, Let us destroy the tree with the fruit thereof, and let us cut him off from the land of the living, that his name may be no more remembered.
American King James Version×)  But I was like a docile lamb brought to the slaughter; and I did not know that they had devised schemes against me, saying, "Let us destroy the tree with its fruit, and let us cut him off from the land of the living, that his name may be remembered no more."
(Jeremiah 11:20 Jeremiah 11:20But, O LORD of hosts, that judge righteously, that try the reins and the heart, let me see your vengeance on them: for to you have I revealed my cause.
American King James Version×)  But, O LORD of hosts, You who judge righteously, Testing the mind and the heart, Let me see Your vengeance on them, For to You I have revealed my cause.
(Jeremiah 11:21 Jeremiah 11:21Therefore thus said the LORD of the men of Anathoth, that seek your life, saying, Prophesy not in the name of the LORD, that you die not by our hand:
American King James Version×)  "Therefore thus says the LORD concerning the men of Anathoth who seek your life, saying, 'Do not prophesy in the name of the LORD, lest you die by our hand'—
(Jeremiah 11:22 Jeremiah 11:22Therefore thus said the LORD of hosts, Behold, I will punish them: the young men shall die by the sword; their sons and their daughters shall die by famine:
American King James Version×)  therefore thus says the LORD of hosts: 'Behold, I will punish them. The young men shall die by the sword, their sons and their daughters shall die by famine;
(Jeremiah 11:23 Jeremiah 11:23And there shall be no remnant of them: for I will bring evil on the men of Anathoth, even the year of their visitation.
American King James Version×)  and there shall be no remnant of them, for I will bring catastrophe on the men of Anathoth, even the year of their punishment.' "

Jeremiah 1:1 Jeremiah 1:1The words of Jeremiah the son of Hilkiah, of the priests that were in Anathoth in the land of Benjamin:
American King James Version×
They do not like what he is doing so much that they are plotting against him and Jeremiah Cries Out to GOD for help.
Jeremiah 12:1 Jeremiah 12:1Righteous are you, O LORD, when I plead with you: yet let me talk with you of your judgments: Why does the way of the wicked prosper? why are all they happy that deal very treacherously?
American King James Version×  Righteous are You, O LORD, when I plead with You; Yet let me talk with You about Your judgments. Why does the way of the wicked prosper? Why are those happy who deal so treacherously?
Jeremiah 12:2 Jeremiah 12:2You have planted them, yes, they have taken root: they grow, yes, they bring forth fruit: you are near in their mouth, and far from their reins.
American King James Version×  You have planted them, yes, they have taken root; They grow, yes, they bear fruit. You are near in their mouth But far from their mind.
Jeremiah 12:3 Jeremiah 12:3But you, O LORD, know me: you have seen me, and tried my heart toward you: pull them out like sheep for the slaughter, and prepare them for the day of slaughter.
American King James Version×  But You, O LORD, know me; You have seen me, And You have tested my heart toward You. Pull them out like sheep for the slaughter, And prepare them for the day of slaughter.
Jeremiah 12:4 Jeremiah 12:4How long shall the land mourn, and the herbs of every field wither, for the wickedness of them that dwell therein? the beasts are consumed, and the birds; because they said, He shall not see our last end.
American King James Version×  How long will the land mourn, And the herbs of every field wither? The beasts and birds are consumed, For the wickedness of those who dwell there, Because they said, "He will not see our final end."

(Jeremiah 12:5 Jeremiah 12:5If you have run with the footmen, and they have wearied you, then how can you contend with horses? and if in the land of peace, wherein you trusted, they wearied you, then how will you do in the swelling of Jordan?
American King James Version×)  "If you have run with the footmen, and they have wearied you, Then how can you contend with horses? And if in the land of peace, In which you trusted, they wearied you, Then how will you do in the floodplain of the Jordan? [ see Jamieson, Faucet and Brown commentary ]
What happens when "all hell brakes loose"... ? HOW will we live?
ARE WE READY TO RUN WITH THE HORSES?

 THE MAN IN THE ARENA
                                          Excerpt from the speech "Citizenship In A Republic"
                                          delivered at the Sorbonne, in Paris, France on 23 April, 1910
                                          download PDF of complete speech

It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.
 http://www.theodore-roosevelt.com/trsorbonnespeech.html

(Colossians 1:23 Colossians 1:23 If you continue in the faith grounded and settled, and be not moved away from the hope of the gospel, which you have heard, and which was preached to every creature which is under heaven; whereof I Paul am made a minister;
American King James Version×)  if indeed you continue in the faith, grounded and steadfast, and are not moved away from the hope of the gospel which you heard, which was preached to every creature under heaven, of which I, Paul, became a minister.
(Colossians 1:19 Colossians 1:19 For it pleased the Father that in him should all fullness dwell;
American King James Version×)  For it pleased the Father that in Him all the fullness should dwell,
(Colossians 1:20 Colossians 1:20 And, having made peace through the blood of his cross, by him to reconcile all things to himself; by him, I say, whether they be things in earth, or things in heaven.
American King James Version×)  and by Him to reconcile all things to Himself, by Him, whether things on earth or things in heaven, having made peace through the blood of His cross.

Hebrews 10:30 Hebrews 10:30For we know him that has said, Vengeance belongs to me, I will recompense, said the Lord. And again, The Lord shall judge his people.
American King James Version×  For we know Him who said, "VENGEANCE IS MINE, I WILL REPAY," says the Lord. And again, "THE LORD WILL JUDGE HIS PEOPLE."
Hebrews 10:31 Hebrews 10:31It is a fearful thing to fall into the hands of the living God.
American King James Version×  It is a fearful thing to fall into the hands of the living God.
Hebrews 10:32 Hebrews 10:32But call to remembrance the former days, in which, after you were illuminated, you endured a great fight of afflictions;
American King James Version×  But recall the former days in which, after you were illuminated, you endured a great struggle with sufferings:
Hebrews 10:33 Hebrews 10:33Partly, whilst you were made a spectacle both by reproaches and afflictions; and partly, whilst you became companions of them that were so used.
American King James Version×  partly while you were made a spectacle both by reproaches and tribulations, and partly while you became companions of those who were so treated;
Hebrews 10:34 Hebrews 10:34For you had compassion of me in my bonds, and took joyfully the spoiling of your goods, knowing in yourselves that you have in heaven a better and an enduring substance.
American King James Version×  for you had compassion on me in my chains, and joyfully accepted the plundering of your goods, knowing that you have a better and an enduring possession for yourselves in heaven.
Hebrews 10:35 Hebrews 10:35Cast not away therefore your confidence, which has great recompense of reward.
American King James Version×  Therefore do not cast away your confidence, which has great reward.
Hebrews 10:36 Hebrews 10:36For you have need of patience, that, after you have done the will of God, you might receive the promise.
American King James Version×  For you have need of endurance, so that after you have done the will of God, you may receive the promise:
Hebrews 10:37 Hebrews 10:37For yet a little while, and he that shall come will come, and will not tarry.
American King James Version×  "FOR YET A LITTLE WHILE, AND HE WHO IS COMING WILL COME AND WILL NOT TARRY.
Hebrews 10:38 Hebrews 10:38Now the just shall live by faith: but if any man draw back, my soul shall have no pleasure in him.
American King James Version×  NOW THE JUST SHALL LIVE BY FAITH; BUT IF ANYONE DRAWS BACK, MY SOUL HAS NO PLEASURE IN HIM."
Hebrews 10:39 Hebrews 10:39But we are not of them who draw back to perdition; but of them that believe to the saving of the soul.
American King James Version×  But we are not of those who draw back to perdition, but of those who believe to the saving of the soul.

Outliers: The Story of Success by Malcolm Gladwell; 10,000 HOURS...

(1Co 9:24)  Do you not know that those who run in a race all run, but one receives the prize? Run in such a way that you may obtain it.
(1Co 9:25)  And everyone who competes for the prize is temperate in all things. Now they do it to obtain a perishable crown, but we for an imperishable crown.
Paul realizes HE HAD TO DO THIS... to avoid  becoming disqualified.

(Hebrews 5:12 Hebrews 5:12For when for the time you ought to be teachers, you have need that one teach you again which be the first principles of the oracles of God; and are become such as have need of milk, and not of strong meat.
American King James Version×)  For though by this time you ought to be teachers, you need someone to teach you again the first principles of the oracles of God; and you have come to need milk and not solid food.
(Hebrews 5:13 Hebrews 5:13For every one that uses milk is unskillful in the word of righteousness: for he is a babe.
American King James Version×)  For everyone who partakes only of milk is unskilled in the word of righteousness, for he is a babe.
(Hebrews 5:14 Hebrews 5:14But strong meat belongs to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil.
American King James Version×)  But solid food belongs to those who are of full age, that is, those who by reason of use have their senses exercised to discern both good and evil.

(Hebrews 6:1 Hebrews 6:1Therefore leaving the principles of the doctrine of Christ, let us go on to perfection; not laying again the foundation of repentance from dead works, and of faith toward God,
American King James Version×)  Therefore, leaving the discussion of the elementary principles of Christ, let us go on to perfection, not laying again the foundation of repentance from dead works and of faith toward God,

  A MINDSET OF GROWTH.
(2Pe 3:14)  Therefore, beloved, looking forward to these things, be diligent to be found by Him in peace, without spot and blameless;
(2Pe 3:15)  and consider that the longsuffering of our Lord is salvation—as also our beloved brother Paul, according to the wisdom given to him, has written to you,
(2Pe 3:16)  as also in all his epistles, speaking in them of these things, in which are some things hard to understand, which untaught and unstable people twist to their own destruction, as they do also the rest of the Scriptures.

(2Pe 3:17)  You therefore, beloved, since you know this beforehand, beware lest you also fall from your own steadfastness, being led away with the error of the wicked;
(2Pe 3:18)  but grow in the grace and knowledge of our Lord and Savior Jesus Christ. To Him be the glory both now and forever. Amen.
(Luk 21:19)  By your patience possess your souls.
(Luk 21:19)  By your endurance you will protect your lives." ISV