This.
Considering you're posting on the internet about suicide means you're not really serious about it. Rather, you probably just want somebody to listen and offer advice.
I can relate to you, through my past. When I was younger I spent my time selling drugs, extorting money from people, and living the life of money hungry dealer. I got arrested and thrown in jail for 3 months. I've had friends die, seen friends kill. When I got out I moved away from my hood and enrolled in school.
5 years later I earned a masters in political science at a reputable university. I couldn't ask for anything else, now that I look back on my past life and where all my so called friends ended up (jail or dead). Why continue existing like this? It's not a life, it's not how human beings live. Take whatever you have, get the hell out of there and try starting life over.
I'd probably be dead or in jail if I continued the way I did, but now I have a really fun career in journalism and have gone to Africa and Asia many times, which was a real eye opener.