One of the greatest things in life is to prove others wrong. If you have a discussion with your kids or with your spouse or with your parents, then it feels good if you can prove that you are right and they are wrong. It gives satisfaction!
Source: Bing Designer
But, there is something great about proving large groups of people wrong. Maybe a football coach once looked at you and said that you are not talented and that you have no chance to become a great player. Or someone told you that you can never be a great musician or a successful business owner? There are many things people might say, but one of the greatest joys you can have is just closing your ears and fighting your battles, and then as you achieve success, you can be happy that you didn't listen to the crowds, and that you managed to go to places where nobody expected you to go!