If you go deeper, I think it's all luck. The time (as in year / era) you're born is luck, the location you're born into is luck, the family you're born into is luck, the genetics you have is luck, just being able to stay alive into adulthood to make something of yourself is luck.

Hard work helps, but it's mostly luck that allows you to even have a chance to work hard. That's why I'm always thankful for being born in a stable family, during a time of peace, in a country in peace, with frugal parents who both provided for the family. And I'm also very thankful to be able to receive an education, learned to read and write, learned to think (still learning...). And extremely thankful to be able to marry my wife, have 3 kids, have a family for me to work hard for and provide for.