I don't think I can change. If I change I will be nothing. Any advice?

Selling drugs is no major accomplishment. Making money does not make you a success when it comes at the expense of others. Try doing the right thing. get your GED, go to college, meet good people and use them as an example instead of drug dealing losers. You can do and be whatever you want in life. All you have to do is start by setting a small goal and reach it then start another small goal and reach it and before you know it, you will have all you need.