That one is really good. I've read it before, and I really like it. I was going to try to find it and post here, but you beat me to it! It explains a lot of things very well, IMO. Thanks for sharing it!

I especially liked this:

"Please understand that chronic illnesses are variable. It's quite possible (for me, it's common) that one day I am able to walk to the park and back, while the next day I'll have trouble getting to the kitchen.

Please don't attack me when I'm ill by saying, "But you did it before!". "