William James was Depressed

I suppose I've always had the subconscious opinion that famous productive people live their entire lives self confident and psychologically healthy. It has been helpful to me to learn that the famous psychologist William James was depressed for most of the time from his twenties until his late thirties. He wrestled with it for a long time. I'm reading a biography of him ( "William James: In the Maelstrom of American Modernism" by R. D. Richardson.) and he is now in his late thirties, recently married, and it looks like he is finally going to win this battle.