Jewish psychology

I received the following email this morning - author unknown.
Jewish holidays are for people with illnesses: Purim is for alcoholics. Pesach is for OCDs. Shavuos is for insomniacs and Lag Bomer is for pyromaniacs who weren't satisfied with Chanuka. Tisha B'av is for manic depressives and Rosh Hashana is for people who are obsessed over dying. Yom Kippur is for anorexics and Sukkos is for the homeless. Simchas Tora is for those in their happier stages of bi-polar. Mi keamcha yisroel - yet people still wonder why the Jews invented psychology.