Hey Batty,
While crying at work is probably not a good idea, crying in general is not a failure, it's a release. A place I often have a good cry is in the shower. I imagine the water washing away my tears. Sometimes I cry until I'm exhausted, until I can't feel anything.
I wish there were something I could say but having been through the same experience I know that there isn't. There's nothing to do but white-knuckle it. You remember a few weeks ago I was right where you are. I didn't think I could hang on and you encouraged me not to give up. It was one of the longest bad spells I've ever had. I came so close to the edge. But eventually it eased up and while right now I don't feel great, at least it's bearable.
I'm thinking about you.
Kendy