In life, you will get told that you aren't able to do something for multiple reasons: you're too small, too big, too this or that, you can't because you are a girl. Everyone has been told at least one of these things or other things telling them why they can't do it. It isn't up to you to control what others say about you, but it is up to you to prove them wrong. When someone tells you that you can't do something, you just have to show them the truth, you need to show them that you really are big enough, or old enough, or whatever the reason was that you "couldn't" do it. I understand that it is way easier said then done, but if you never try, it will never work.

Which one are you, are you going to let the people who are busy telling you that you can't do something for some reason win? Or are you going to tell yourself that one day, all of the people who have ever doubted you will be sorry that they hadn't believed in you from the beginning?