How I Got Depressed After Working on a SaaS Application

I worked for months and months straight, like 16 hour days, definitely not healthy. It was so much better than doing my schoolwork. I eventually did make enough to pay it back before I moved out. But the pattern that I do it in is I do eight months of work in three months time and then I take three months off. That's just how, just what I've been doing for years and I couldn't escape that as much as I read all the self-help books.