No you didn't work hard, that's just your ego. You could have been born a poor ugly deformed rat in the slums of Mumbai, who have abusive parents.
You just were extremely lucky to even get the chance to get into university or get free education.
Even intelligence is purely genetic, some people are born with high IQ and other people are just born dumb.
Everything in life is purely based on luck.
This is the harsh truth, and God is not real.