Do you really think changing your mindset can change your grades for the better?

I honestly think changing your mindset can change your grades for the better because when you think positive you get positive, and when you think negative you get negative. From personal experience everytime I have a fixed mindet I give up and fail. When I change my mindset to a growth mindset I see myself suceed. I see myself doing so much better. I pass my classes, do all my work, come to school, and I see a positive change. I believe changing your mindset can change your grades for the better.