This could be any number of issues. If it started when you were very young "6-7 years old," I'd say ADHD is possible. Bipolar can affect teens, but usually doesn't. It could be stress and hormones. You really should talk to a professional about your issues. I just don't have the answers. You mention drinking and partying. While this is normal teenage behavior, it can cause serious consequences. It can interfere with sleep, and lead to stress and other mental health issues.