It depends on your health situation, so fast using common sense, judgment and above all faith. Fasting is an excellent spiritual exercise to get our minds and spirits in tune with God's purpose and plan for us.
Is it obvious or is it a subtle, internal process? One of the signs that God may be calling you is that you are beginning, however gradually, to truly understand the Scriptures with a depth and dimension that you never experienced before.
In the article "Jerusalem Center of Conflict, Center of Peace," it appears you are insinuating that the New Jerusalem will be set up by man, an idea not supported in the scriptures. Can you please clarify?