Being someone who suffers stress pretty easily, I fully empathize with how you feel. I attempted a stress management course a few years ago, and got sent away with, go here and do this anger management course then come back to us.....
It worked for me on several fronts.
Your best friend in this situation, is a pen and piece of notebook. When you are driving along and have a thought, pull over and write it down for dealing with later.
When you deal with it.. one page per issue, and attempt an action plan. It might be for some items you need someone else to read your notes and form up some of those action plans for you. Trying to deal with everything at once is the worst.
I'm dealing with a high stress problem at the moment, financially related. My father couldn't see the horizon for the anger levels, so I sat him down and did the above. Mother contributed her bits, I contributed mine. It's a much nicer environment now as we work through each item. Sometimes we only spend 10 minutes each night on an item others we might spend an hour. Once we are done with that, the book is closed and we settle back for the evening.
If you are being pressured into paying bills, but are awaiting the 'process' to be completed, get the ombudsman involved. The creditors are NOT allowed to pressure you in this situation, and once the ombudsman is involved, the harrassing phone calls and mails will stop immediately....even the banks run for cover (as I found out)
Home Page :: Financial Ombudsman Service
As for flying. I wouldn't ground myself. That will just take away the oppurtunity to totally forget the issues for a couple of hours, and not give you release from the problems. If you are concerned, take another pilot with you. It is amazing how much better you feel after a $100 hamburger.
Cheers
Jas