Sounds like you are very agitated and depressed. How long has this been going on? I went through only a few days like this before I really felt I would lose it. The only thing that kept me out of the hospital is there would be no one to take care of my demented mother. Then the episode passed. It was quite hairy driving during this time,

Hang in there for a few days. If you still feel like you are going to go over a cliff, go to to the nearest hospital I wish you well!