Welcome to SR. I got clean and sober at age 21 years, 10 months by going to NA meetings and taking the suggestions and advice offered to me by people who had succeeeded in staying clean. I now have 21 years clean and sober. At age 21, I sometimes felt like I might be too young to get clean, but I'm very glad that I stuck with the program. I think it's great that you're getting clean at 19. You have an opportunity to live life and avoid misery.