You really do. No need to blush, it's true and deep within you, you know it. I feel that you do. I beg of you please, with all your might never underestimate yourself, ever. It's neither good or healthy. I am certain you mean a lot to a lot of people. One must also matter to themselves.
You seem a wise man, through life, studies, adversity, triumphs. Believe in you the way your family and friends do, believe in you, because you must. I believe in you, and you yiur father does as well. It comes from within.