Jumping is one of the most amazing adrenaline rushes you can experience! Give yourself a little credit, I'm sure if you took lessons you would be able to get the hang of riding in English tack and could eventually work your way up to small jumps. An instructor will help you learn how to use your body to keep a balanced seat and then work your way up. If you are really interested in it, give it a try! You have nothing to lose, but just make sure you wear a helmet :)