I think luck is a great part of it because I think that the particular makeup of the person that you are attracted to, and that you fall in love with, is very important. Even down to that old bromide of a sense of humor and all of that.

Jack Lemmon
If I'd been bright, I'd have realized that I was horribly uncomfortable, amazingly frustrated, and like any sensible person, I'd have quit. But it never occurred to me that I wouldn't be successful eventually.