I'm worried though this statement is heavily colored by "survivorship bias"- Certainly ultra-successful people are often obsessed with their ideas, but it does

I'm worried though this statement is heavily colored by "survivorship bias"- Certainly ultra-successful people are often obsessed with their ideas, but it does not logically follow that being obsessed with an idea is a good metric to base decisions on. Just look at all the people obsessed with writing the great American novel and/or next hit song. I think what is more important is to focus on ideas for which you have a comparative advantage (https://en.wikipedia.org/wiki/Comparative_advantage https://en.wikipedia.org/wiki/Comparative_advantage) which frequently, but certainly not always, will mean there's a certain amount of obsession as a side-effect.