Not only attitude, but also personal connections ("it's not what you know but who know"), social skills, chance ("being in the right place at the right time"),

Not only attitude, but also personal connections ("it's not what you know but who know"), social skills, chance ("being in the right place at the right time"), being tall, culture fit, product-market fit.. I think also the right kind of knowledge, not only technical, but knowing what problems people are having in some specific niche markets, or knowing how to solve something that people need..