You are still young and claim that you just stopped doing it. I can see, that you will start again at some point. I think it's important to make it clear for yourself why it's bad and why you shouldn't do this anymore. Make a list for yourself and list up all the arguments which tell you not to start again anymore. Start with things like "family". It's not only yourself but lots of other people you can harm with addiction. Keep this always in mind!