Wow, you have done so much for your age! Well done! This shows that if we are really passionate about something and we dedicate all our time on it, we will eventually master it. There is a saying that goes like this: "Choose a job you love, and you will never have to work a day in your life". Because if you love it, you don't feel like it's a job. You feel like it's a hobby.
Ps. I love pizza too! :)