I deserved to graduate.
Good job on graduating. Why do you think you deserved it?
I felt proud of it; after all it was for me, I found the exams difficult but I still made my way to graduation.
It is good to enjoy the fruits of your labor and be modest about it. People admire success when others work hard to achieve their goals.
Whatever, I'm better than them and I think I deserve more attention being that I am smarter.
You can be proud of what you have done, but do not put others down to raise yourself. People will think you are full of yourself and not want to associate with you.