How do I stop breaking down every day?

How do I stop breaking down every single day?

I'm crying multiple times everyday, there's just nothing left in me. At work, home, on the bus, just walking outside. I'm getting a bug problem. I rarely shower or brush my teeth. I barely eat anymore. I'm also getting angry all the time, at small things. This is costing me my only friend. I can't lose him. I have to keep my job as well. I've already wasted good money on three therapists, and made no progress with any. There is no reason for me to stay alive, every minute of every day is miserable and hopeless.

Thank you for any advice