The single best predictor of well-being was gratitude.

So there you have it. Not all character strengths seem to be equally predictive of well-being. Not to say that you should rule any of them out, of course. Humility is considered very valuable character strength to have by most people, and is MUCH needed in our society and around the world. But it just doesn't appear to be a very good predictor of well-being.

*** Remember, well-being isn't everything there is to life. There are other human goods.

Nevertheless, if you do seek high well-being, your best bets are gratitude and love of learning.