I don't have any advice but this is my one anniversary of going inpatient too. Well yesturday was the anniversary of being admitted actually. Its weird b/c its not exactly a thing to celebrate, but like you mentioned its good to see how far i've come in a year. Its also making me look at much farther I'd like to be by the next anniversary. And I agree it's not something i ever want to do again, but it was an experience i dont want to forget.
So I guess what I'm saying is "me too"