I copied the answers of the final off my neighbor and I got a good grade.
Congratulations, I guess!?? Did your neighbor allow you to cheat off of them?
He actually helped me to get the correct answers, what can I do?
Your neighbor should not have allowed you to cheat. You won't be learning anything and if you get caught, you could be expelled.
I'm going to use this grade as a source of confidence.
But you did not earn the grade, so what exactly are you confident about. That you can cheat well, that is not a good thing to be happy about. Cheating in school only harms you since it means that you are wasting time and did not really learn anything.