Go to the bank and open up a savings account that you wouldn't be able to access from your bank card. Put money in there once a week, two weeks, month, whatever you can manage, and DON'T TOUCH IT. Poor self-control with spending is a problem many people struggle with, but it is an excuse, not a reason. Look up self-help books or websites to get a control of your spending problems. Take some initiative, do some work! You don't necessarily need someone to hold your hand along the way.

As for the dermatillomania, I have that as well. Let me repeat: If you work as a cashier at a fast food place, you will NOT be around the greasy areas much. And even if you were hired on as a cook, you are too busy to have any spare time to pick at your face. Trust me. And even if the job does make your acne worse, you have to decide what is more important: Having a clear face, or being the strong, independent woman that you claim to be by moving out of a toxic household and moving on with your life? It's 100% your choice, do not let these lackluster "reasons" get in the way.