(I have no idea where to post this so I'm putting it here as it's quite uplifting.)
Now, I don't normally like these kinds of things that do the rounds on Facebook but this one is different. It has nothing to do with PD but I think it will resonate with all of us here.
http://www.pref.com/a/tckld/thiswas-written-by-an-83-year-old-woman-to-her-friend