I went spelunking in Airman's Cave. I was silly and didn't do the beginner and intermediate caves first as suggested. You can find out more about it here: http://www.utgrotto.org/newcaver/caves.asp. It was kinda scary (we got lost a few times)but we managed to make it through.
It was really great. Now any time I have doubts I can just think about how I didn't give up in that claustrophobia inducing cave. Whatever the challenge I'm facing I know it can't take more than the will I had to find to pull myself out of that cave when I was tired exhausted and scared that I might die there.
I also lost 90 lbs. I'm at 175 now. That took a considerable force of will and the recognition and changing of many deeply ingrained habits.
Stopped smoking cigarettes for a few months with the help of an ecig. I'm currently lowering the amount of nicotine in my fluid every time so that eventually I wont even need the nicotine.