I have no friends or family?

stop giving a damn. you dont need anyone in life but yourself, the sooner you realize that the better off you will be and learn to love and believe in yourself so youre not so reliant on other peoples reassurance and praise...you KNOW you are bright, hardworking...why the hell do you care what he thinks? as far as proving him wrong, LIVE your life! show him! make it your mission! doubt is the best fuel for success if you use it to push yourself... enough with the crying it does nothing for your life, its time to start being strong, showing and proving and being the best you can be. :) good luck!