You made an informed choice, ok so the informed bit may have been limited a little, but it was until he got a job and could support himself. He now has that, so you're able to back off and allow him to use his pay to suport himself.
The way I read it you helped him help himself, you didn't 'enable' him to do anything he could have done for himself at the time. Giving a leg up isn't a hanging offence. If you hadn't done it how would you feel (you don't need to answer that!)