Two of life’s greatest enemies are the past and the future.  I cannot change yesterday.  I do not yet have tomorrow.  And if I am not careful, I will allow the regrets of my past and plans for the future to rob me of God’s precious gift called “today.” We all have a past.  The apostle Paul wrote that we must forget those things that are behind and reach for those things that are before us (Philippians 3:13).  Perhaps you think the man who wrote these words had no terrible thing to haunt his memory, no past recollection to discourage him.  But you would be wrong.  Paul had a past.  He simply chose not to live in it. Paul had…