I failed my drivers test today and couldn?t eat or get out of bed since. I?m just tired of always feeling like a failure.

Damn man... Wish I had something of substance to say..
You know, we all fail now and again. It happens..
Maybe start from the beginning, making small, simple and easy-to-accomplish goals and build your way back up again?
Its usually how most people do it.

Start with learning how to cook something new, or go running for a couple minutes.. just anything really..
Don't get all suicidal, I'm sure you're a cool guy/gal, you just need to get yourself out of the rut that most of us get into at some point.

Keep trying! I didn't get my driver's license until I was an adult and when I finally did my quality of life went way up:)