Possessing little self-regard can lead people to become depressed, to fall short of their potential, or to tolerate abusive situations and relationships. Too much self-love, on the other hand, results in an off-putting sense of entitlement and an inability to learn from failures. (It can also be a sign of clinical narcissism.) Perhaps no other self-help topic has spawned so much advice and so many (often conflicting) theories. Here are our best insights on how to strike a balance between accurate self-knowledge and respect for who you are.