Never allow the criticism affect you negatively, let it motivate you instead.
An English teacher once wrote ‘disappointed‘ on a quiz I did not pass. Of course I took it personal since I felt that I brought down his expectations, my eyes watered. I made a promise to myself that I would make sure to never let myself go that low in English again.
EOC approaching, I did not let a word in red determine my knowledge of English. Instead I studied and worked harder than I did before. I proved that I could do better by earning the perfect score on my essay, and getting commended for the first time with the subject.
I included a link below to a motivational speech that helped me believe in myself.