My daughter was a drug addict for almost 3 years. She ran with some pretty unsavoury people. She has charges for stealing but luckily was a juvenile and avoided jail, and now her records are sealed. For a long time, I was certain that she would end up dead in a gutter.

Now she has a job, she worked up to become manager, she wants to buy a house, she is paying off not only her debts but her bf's debts. She came out the other end alive, and more mature and insightful for her experience.

So yes it can happen. But she had to do it for herself, make that decision herself. It hurt like crazy to be helpless but you can't force anyone to make a better decision.