It's good to read you so soon. I think the first thing I would do is to find out what our character's life was like before his current state and understand why he left home to attack the problem at its root, there must be many sad memories, heart wounds to heal and these are the points that I think should be treated because while those wounds are there it will be difficult for him to feel motivation to change his current state. Perhaps talk to a family member or someone who can give us references to his situation, first of all must be restored emotionally.