The greatest lesson I ever learned from someone else was not to always think highly of yourself. Think just below arrogant and narcissistic. That way you exude confidence.
It was the greatest lesson learnt for me because it helped me mould myself into the person I am today. I thought to myself… I should always be proud of what I have achieved, I should never be ashamed but never satisfied at the same time. This keeps me wanting more and keeps me motivated to continue.
A great example of this is in the gym. I am very proud of what I have accomplished while working out and when people ask me “what do you squat or dead-lift” I can proudly say the numbers, I would still proudly say the amount even when it was not high. I seemed positive and confident all the time.
However I stress it should not be taken to heart and too seriously because then that leads to Narcissism… Now I do agree everyone should love themselves and be happy with themselves but there is a certain point where Narcissism is just plain stupid…
You need to draw the fine line between the two 😛