Truth is the goal, don't lie to yourself to make yourself better, that's a rocky foundation. Know yourself, know what is real and what is not. If you don't, you'll be stumbling through your life blind.
How can you be 100% sure that any characteristic belongs to your real self ? Maybe it has to be built by hard working. Gain level
. There is no "real self". There are only various purported perceptions of you by other people. In other words, there are various "selves". There is the "you" you perceive. Then there are various ones others perceive. Sure there are common characteristics amoung each perception but they do vary.
Reality is defined by your perception and nothing more. The perception of others go only as far as you perceive them. There is no common reality.