Don’t do your best to “prove them wrong”.
You’re not fighting with anybody. Nobody cares.
You do your best, because 10 years from now, when you look in the mirror, you don’t want to see someone who lost just because he didn’t even try.
You want to see someone who went through the journey of life, with wins, losses, victories, defeats, pain, and satisfactions.
You want to see someone you respect. Someone that makes you proud.