today i feel depressed

i saw ACLS marks today, i passed, but i feel depressed due to there are a lot of things i want to do and i cannot do as well as i want to.
i got 78 but a person i told the answer got 80,
tomorrow i have to do some presentation, dr LI help me, I am grateful for his help but i feel a little depressed due to his attitude, he is helping me but at the same time he is aknowledging that we are lesser than they are.