Impostor Syndrome is like being a secret agent - in the most depressing way imaginable.

No matter how hard you work, no matter how much you achieve, you still feel like a fraud. You still question your ability and you're waiting to be exposed. More formally, it's often referred to as "a failure to internalize success." You attribute your accomplishments to luck or insane amounts of effort, but never talent or skill.

Self-efficacy is your belief about your ability to accomplish a specific goal while self-esteem is a judgment of personal worth. My self-efficacy about my ability to eat ice cream might be high, but I don't think that makes me a good person. And confidence is more generalized, while self...