I know you'd like to characterize it as dumb luck because that would make you feel better. The reality is that I've been making small monthly bitcoin purchases for the better part of a decade as a part of a much larger retirement fund.

When the btc price hit $100k, I sold most of the initial investment so that now I'm just risking losing part of my gains.

You can call it lucky and incredibly stupid. I can call it calculated risk.