I sometimes like to call that actionable arrogance rather than inexhaustible self-confidence. I knew a lot of people who had the initiative you're referring to,

I sometimes like to call that actionable arrogance rather than inexhaustible self-confidence. I knew a lot of people who had the initiative you're referring to, but most of them ended up failing at miserably at their ventures (which makes sense if you look at the number of startups that turn into successful businesses). There's also the aspect of luck which I hear commonly defined as "where preparation meets opportunity."