1. Yes, if you can take some time.
2. Do some crying. You probably feel depressed, burnt out, stressed out. Crying is a great release.
3. You don't need to do anything right now it's ok not to do anything right now.
4. If you're under personal financial stress try and resolve that. Perhaps move somewhere cheaper.
5. You probably don't need to think too much about what went wrong right now, maybe take some time first?
Realize that there will be a time when the stresses of this business will be long behind you, and you won't feel it with the same intensity anymore. Maybe read some good books, it can really help you feel alive again.
All this is very biased. It's based on how I would be feeling, if I'd gone through the same process as you.
Good luck!