In fact, you don't have to take this to heart at all! First of all, look up and learn to smile. No matter how many people can't see you, you should do this, because this is the first and necessary step of self-confidence. Don't care too much about what others say. You only live for the people you love and those who love you, instead of letting those who look down on you be complacent because they despise you. Just live well, and people who love you will appear sooner or later.