You are breaking things down into small chunks, which is good.
I am in a similar boat to you - Also in a stressful job, and often get into such deep depression when i just want to throw in the towel. I too have researched the OD dosages for all my meds. But I'm too anxious to hurt my family and boyfriend and the few friends I have.

And at times you need to just actually look after yourself. Put other things on the back-burner. Even if it means taking a half-day off from work every now and again.

I've even been thinking about telling my company about my dx, but doubt it's going to be of any use. I told my colleague, as I felt it would affect our working relationship, but it's fallen on deaf ears - except when i finally snapped.

I hope things start looking up - we are here for you.