When I taught, I needed help but did not recognize the need because I was taught to tough things out. Looking back, had I got some help, I not only would have been happier, but I would've avoided some mistakes that I now know were a direct result of the mental stress and strain.
Get counseling; find and do things that make you happy.
BUT most of all remember this:
Trophies collect dust but the lives you are changing for the better will live on to help make this world a better place.