Everyone has critics

I believe that everyone alive today has had at least one critic in life; at least one person that talked about your problems or perceived faults to themselves or other people. Whatever you do, people will form opinions, and perhaps express them: some approving and some disapproving. Even dead people have critics.

Since criticism is always there, you might as well use it to your advantage; by learning what you can from it. As people express their opinions, you get an opportunity to see things from a different perspective, apart from yours. Studying criticism allows to understand how other people think, and how they see you or your actions, and gain insight into some of the innumerable views of reality that people around you have.

Criticism should help you make better decisions, and not stop you from doing anything. Take that different opinion and match it against yours, in light of your situation, and learn.