Anne, if you can teach, it's a gift...so look outside of the "regular" world of teaching.  Have you ever tried technical writing?  My husband did this for a while on a part-time basis (he was a teacher in the military, trained by the military, teaching new airmen the job he'd been doing for umpteen years).  It can be quite lucrative...it's not terribly exciting work, alot of behind the scenes stuff, but for a while that might be a refreshing change.  Corporations, particularly manufacturers, government, etc, need folks who will write a curriculum for a new product or methodology and then teach that curriculum to its employees.  My husband did that for a local phone company...just a thought. 

You might also look into private schools or Montessori schools, though the Montessori schools would require special training for you...you'll find a different clientele there.  The pay will not be as good, but the rewards for many are well worth the pay cut.  Look also into Slingerland training if you have none - the private schools for dyslexic children (like the one my daughter attended for three years) tend to teach using that methodology and they are an absolute GODSEND to dyslexic children and their parents.  Your special skill set having dealt these many years with the more difficult kids that you've had will be very welcome in that environment...many dyslexic children, when they become so frustrated and upset with knowing that they aren't "getting it" like the other kids, resort to acting out and serious behavior problems.  And the older the child when he/she enters the school just for dyslexic kids, the more behavior issues to start, but they quickly turn around when they start seeing that they really can learn, just in a different way...it's the ultimate reward for many of those teachers, God bless them!!!

Whatever you do, do what will rejuvenate you so you can continue to share your gifts - God gave them to you for that purpose!!!  Love ya - and will keep you in my prayers.