I know two people who both found their purpose. They LOVE what they do. They think about it all hours of the day, they love working on it - and will stop at nothing. In my view they both have already "made it", but for them, they keep grinding higher to even better heights. These two people I try to have as my role models, because it is a rare straight. It is pretty difficult to get ahold of them because they are both somewhat famous now.