Just What The Doctor Ordered

(I was reading a collection of Doctor Who short stories, which I’d borrowed from the library. Between the pages I found a little hand-written note, which said:)

Note In Book: “I’ve never met anyone who wasn’t important. You’re special. Never forget that.”

(On the other side it was signed “-D”. It really cheered me up at a difficult time. Of course, I’m putting the note back when I return the book.)