Fearlessness is not the absence of fear. Rather, it’s the mastery of fear. Courage, my compatriot Socrates argues, is the knowledge of what is not to be feared. Which is to say, there are things we should be afraid of (poisonous snakes when we’re hiking, for instance). So we will never completely eliminate fear from our lives, but we can definitely get to the point where our fears do not stop us from daring to think new thoughts, try new things, take risks, fail, start again, and be happy.