I agree that you should write out some positives to balance it out. Maybe try to write ten positives so you have more good things than bad? And I saw on this really good program about depression and becoming a happier person and stuff that you should try to list 5 positive things at the end of every day. These positive things can be about anything, as long as there are at least 5 and they are all positive. Maybe you could consider that? Good luck!