I have various chronic illnesses and had a hard time working. After I ended up in the hospital for 3 days due from the illness and stress/fatique of working my DH and I decided it wasn't worth risking my health to work. Thankfully he makes a good salary and I worked for the "extras".
I spoke to my Dr about filing for disability and she said to try and see what happens. It is very difficult to get SS disability but I tried and I was one of the lucky ones that was approved the first try. In fact, they "declared" me disabled a year and a half prior to filing.
Even tho I receive disability I can still work part time. You can not make more than $810. per month or you benefits will be reduced.
It was the best decision I have ever made but I still have a hard time accepting the fact that I am disabled in the eyes of the law at only 40 years old. I also have "invisible" illnesses, so thats tough too.
My suggestion is, if you are having a hard time working and it is effecting you physically than maybe you should see about filing for disability. You can always then pick up a part-time job (may be more flexible and less stressful) or even volunteer for the causes you are interested in.
Now mind you (before I may get flamed) I am not saying quit your job and live off the government (not that you would be able to with what they pay

), but keep it in mind. I honestly think that many people that have various chronic illnesses and/or are young don't realize that it is a possibility to collect SS disability.
Good luck with your decisions!
PM me anytime if you want to talk