It's difficult to make an appropriate call on your life with the state of mind that you're in. It's not to say that you aren't an intelligent person, it's because being in that situation clouds you mind and blinds you to things that are worthwhile in your life. It's very easy to see everything that wrong with us, and when we start cateloguing them, it turns into a heavy burden to wear around everywhere you go.

My friend once told me something simple: Are you happy with your situation? If you are, good, if you aren't - find a way to change it so you will be.

In this sense, I was unhappy with the deadend job I was in, so I took a huge (it's such a big, scary step) to move away and make a new life for myself. What I had there wasn't worth living for, and I was wallowing in misery and depression. But making a change, any kind of change, will help bring you out of the rut that you're in. Do something that's new, even if you're not sure you'll like it. Make an effort to avoid the things that make you miserable (old habits are hard to break).