One thing that helps me that may or may not help you is reminding myself that I am more than my job or the money I make (or don't).

It can be hard to believe that but it's true.

Don't let the suicidal thoughts go too long. Talk to your doctor or someone in a professional capacity. Depression can get bad fast if you ignore it. It's better with help and support--there's no reason for you to gut this out alone.