A Street Cat Named Bob by James Bowen

When a street musician, James Bowen, found an injured cat he never anticipated it would become a companion and a reason for him to change his life. Up until then he had a drug problem, spent time living on the street without a home, and had been estranged from his family. All that changed when he began caring for Bob, the ginger cat. Bob has since become famous world wide - see Bob's blog here
Someone once told me when life is the most difficult then do something for someone else and take the focus from yourself. This seemed to have worked for James Bowen.