By working real hard and realising nothing is achieved without putting effort in it. Even when people tell you won't cut it, you push through and prove them wrong.
Remember, none one ever got anywhere by just wishing they had something, or by thinking others had it easier than you. And even if you fail trying, learn from you failure and try again and again. But never blame your failure on others because if you do, you'll spend your time being angry on others instead of improving yourself.