I spend almost all my time alone and while it's depressing to no end, I'm afraid on some level it's become so comfortable that I'm addicted to feeling sorry for myself and will never break the cycle.
Do you have any other activities that you do?
No, not really. I just don't enjoy anything.
You should not sit around all of the time and feel sorry for yourself. Maybe you can find a new hobby that you enjoy.
Other hobbies cost money and I don't have any.
There are plenty of hobbies that don't cost money such as drawing, researching things you're interested in, etc.. Finding anything to do to get you up and moving will be a huge help. Even if it's just going for a jog.