To be rejected by someone doesn't mean you should also reject yourself or that you should think of yourself as a lesser person. It doesn't mean that nobody will ever love you anymore. Remember that only ONE person has rejected you at the moment, and it only hurt so much because to you, that person's opinion symbolized the opinion of the whole world, of God.
I define a 'good person' as somebody who is fully conscious of their own limitations. They know their strengths, but they also know their 'shadow' - they know their weaknesses. In other words, they understand that there is no good without bad. Good and evil are really one, but we have broken them up in our consciousness. We polarize them.