No, although I wrote one for a teacher/mentor once. Bad-bad-bad case of (maternal) transference.

The song The Impossible Dream from Man of la Mancha reminds me of my pdoc. He's always trying even in hopeless cases, and also does unpopular stuff for a good cause if he believes in it (he had me sectioned once. And if I beg him to raise my dose more quickly and he feels it's dangerous or will be disbenefical (I just made up that word) he won't do it. But he will explain his reasons as many times as needed, and hear out all my arguments, and help me figure out ways to not go mad.)