If you want to loan a friend some of your money, that's your choice: but make sure that you don't get caught up in giving them any kind of long term support. You could end up supporting their negative behavior without meaning to. But if you do give them some money, you must be tolerant of how they choose to use it. If you give it, you give it: and there should be no strings attached. Telling someone how to use it will only come off as arrogance.