You're feeling down because you know what you are doing is wrong, and you want to stop it, but don't know how. Where are your parents? You ARE depressed because you lie and steal. You have the power to stop yourself from this distructive behavior. Stop and think about the kind of future you are going to have if you continue this route. Will you even HAVE a future? You are just a baby. Who is making you grow up so fast? You say you are mature....a mature person doesn't lie and steal, do they? That's a kid's behavior. You need to talk to someone to find out why you continue doing things you know will hurt your future. What would you like to do some day? What do you need in your life right now to be happy? We can't help you without the information to determine what caused you to react to life this way.