A lot of people think that their success was entirely by their own efforts. I'm with you, there was a lot of luck involved.

Things that contributed to my success that I had nothing to do with:

I'm white. I was born in the US. I'm male. I have a reasonably high IQ. My parents were middle class. I was raised in a medium sized town on the west coast. I was interested in computers and an early adopter. I stumbled into jobs that let me use that interest and make a successful career out of it.

Certainly I made some good decisions along the way, but in different circumstances I could have turned out completely differently.