Hey there. I'm in my mid 20s and sobriety is treating me just fine! Your life is certainly not over. Actually, my life began when I got sober when I was 23. To be completely sober I had to completely refrain from doing all substances. For me to smoke just marijuana today would lead me back to pills and alcohol. So it has to be zero tolerance. I come here to SR. I attend AA meetings and I communicate with other AAers daily. I also do my best to work the 12 steps on a daily basis. I went to rehab and that kicked off my sobriety, maybe you could do the same. Sobriety can be achieved if you want it bad enough, but you need to be willing to put that life behind you. Goodluck