I went out on disability last May. I decided it was time to go when I was out of work more than I was there and the other people in my dept where having to pick up the slack. Plus when I was there I was making a lot of mistakes between cog fog and my vision. My boss was making things increasingly difficult on me on top of that.

It isn't easy being out of work. Financially I am ok, I had private disability insurance and I'm actually bringing home about the same (no 401k, stock options, saving gas money etc) Mentally I would like to be working, I'm going a little stir crazy but I'm almost constantly having problems.

It isn't an easy decision to make, good luck.