I don’t mean you should tell me your criteria.

Gotcha, I wasn’t trying to put words in your mouth. My apologies for misunderstanding your question.

if your idea of success is chess world champion - many have worked 12 hour days for years at it and failed - thus much luck is needed. likewise you may be great at business without ever making CEO. However more modest goals are reached by many - chess national master is in reach of many more. Engineers don’t make near what the CEO does but many more get there.

All of those examples assume you’re starting from a reasonably high baseline of stability, mental & physical health, resources, and likely education. My point is that you can’t assume those things. Lots and lots of people aren’t even lucky enough to have that starting baseline to even start working toward any of those achievements in your examples.

That’s why I said that my particular personal goals are irrelevant, but where I’ve gotten most would look at and define it as successful, and that I recognize that so many points on that path I was lucky to have the “upside” outcome rather than the “downside” outcome which would have left me far less successful, or at worst, dead. It really doesn’t take many of the inflection points in our lives to not go our way for us to be knocked way down or knocked out entirely. I am very lucky that hasn’t been my fate.