I was addicted to weed from ages 15-23. I have clinical depression and anxiety/OCD (now medicated and stable). I basically isolated and got stuck in a loop of believing I was broken and a bad person. When I committed to quitting I joined addiction recovery groups and asked for help instead of trying to do it alone. I still rely on the wisdom I gained in AA/MA. Trust God, clean house, help others, go do something when you are in danger of wallowing in self pity.
4 years later, I have a few real friends and many acquaintances. I swing dance and volunteer. I work in a semi-social office. Life is good. I still get paranoid thoughts, but they don't own or define me. I wish the best to all the lonely programmers and alienated people out there.