Wisdom Is the Tolerance for Cognitive Dissonance

To be confident in your decisions, to make confident decisions with the right amount of confidence, you really have to have a tolerance for ambiguity and an acceptance that things may be unknowable. Warren Buffett talks about placing smart bets, not being able to be sure at the time that you're buying some stock that it's definitely going to go up in value. But thinking through the uncertainties and using that information to plot the wisest course forward that you can is what successful investors do.