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, in which individuals may behave in a self-centered, arrogant, and manipulative manner. Perhaps no other self-help topic has spawned so much advice and so many (often conflicting) theories.
Self-esteem can influence in our lives in a myriad of ways, from academic and professional success to relationships and mental health. Self-esteem is not an immutable characteristic; successes or setbacks, both personal and professional, can fuel fluctuations in our feelings of self-worth.
Each individual’s experience is different, but this psychological resource seems to rise and fall in systematic ways across the lifespan. Research suggests that self-esteem grows, by varying degrees, until age 60, when it remains steady before beginning to decline in old age. (Source: Psychology Today UK)