I feel for you, but I'm going to be blunt. You've got to get rid of the weed. As long as you're smoking, your head isn't going to clear and you're not going to want to do anything. Flush your stash down the toilet and don't look back.
Then, as someone else has said, getting a job is a really good idea. Otherwise you're going to wind up on the street, which will be far more depressing than your situation now.
Once those two things are taken care of, get help. I don't personally recommend staying on antidepressants for life -- no, I'm not a psychiatrist; this is just my opinion -- but they can be a useful temporary crutch.
Yes! it's a very easy trap to focus on the 'big things' when you're unhappy or depressed, while often the solution lies in simple things like diet, exercise, and general lifestyle.
Sometimes I think our brains actively keep us from realizing this, because they want to stay in charge. So we find solutions in more abstract, mental things, where sometimes the first (and sometimes the only really necessary step) is to start taking care of the whole of us.
Agreed 100%. Daily smoking, (especially starting in the morning) puts your life in a permanent twilight. And regarding girlfriends... a chronic stoner is usually pretty unsexy.
Put the weed away. Maybe put the computer away also. Start exercising. Spend as much time outdoors as you can. You need to feel physical want and frustration and pain a little bit. Don't hide from it... feel it. This (in my opinion) is one of the best antidotes to apathy and depression.
Then, as someone else has said, getting a job is a really good idea. Otherwise you're going to wind up on the street, which will be far more depressing than your situation now.
Once those two things are taken care of, get help. I don't personally recommend staying on antidepressants for life -- no, I'm not a psychiatrist; this is just my opinion -- but they can be a useful temporary crutch.