Wow, you should be so happy right now, you have learned how to learn, and that is what school is really all about. Don't look back on when you struggled, you have gotten past that now and have grasped how to learn better. That is why others are asking you to tutor them, what a compliment that is.

It is important to keep in mind that there is no such thing as perfect. Continue to enjoy the learning and make efforts to not talking yourself into stressing about achieving perfection ok?