Grace on a fig tree

I met a man who has a problem with addiction, in particular, gambling.  When he feels the urge hit him, he gets in his car and drives a route in Denver that takes him past a number of place where homeless people are encamped.  He hands out food, clothing, blankets.  He is like the fig tree in Luke 13, the tree that would not bear fruit.  This man allowed God to cover him with grace so that he could turn his addiction on its head and bear beautiful fruit.