A lot of people think they were successful on their own merit, because you didn’t fail. But when you fail you know it was beyond your control in most cases. Luck plays a bigger part than you think. Hard-working people usually get more opportunities, so they tend to be more successful. So working hard and putting efforts do matter in the end.
There are many millionaires in SV. The young people think they are successful because they are so talented and smart. They try new things and realize they were simply lucky last time. Look at many Internet success stories and what happened to the founders afterwards. Almost none of their efforts after one time success panned out.
Be modest and grateful.