Self-esteem is your opinion of yourself. When you have a 'bad' opinion of yourself, that's low self-esteem, when you're opinion is 'good' or 'great', that's high self-esteem. High self-esteem like I mentioned above, doesn't let other people's perceptions get to you, even if they impact you to a certain degree, you get to determine the enormity of the impact. For me? Water on a ducks back...