Leave a note in a library book

I went to the local library today to check out a book that is on my reading bucket list, and while I was there, decided to cross "Leave a positive note in a library book for a stranger to find" off my 101 things list. I decided to leave it in a self help book, and chose one by Dr. Phil, as I felt it'd be a popular one for people to check out. I stuck it in the middle of the book, folded up. Here is the letter -

I hope it helps someone!