If I could change my experience at school what would I do?

If i could change my experience i would maybe let myself be more me and not worry about what others think or say.. Its not that i act fake or not myself , i just tend to be more quiet at self content at school.  I want to show all my teachers and classmates and friends how funny i really am and how cool and down to earth I am. At school ill keep to myself and not joke around a lot like i do when I'm at home or at  friends houses.