Counselling probably saved my life, just talking to a trained counsellor week after week about not a lot (so I thought at the time) helped me click things into place. Medication just numbed me completely and I felt out of it all the time.
If you smoke weed then stop as its a massive cause of mental health problems and if you drink stop or cut right down, drinking gives me terrible anxiety the next day.
I agree with Bradders, I could be surrounded by lots of friends all the time but still feel totally alone. It's a terrible illness to live with.