It's a special person - and personality - who can lead a start-up to soaring success and sustain that success for the long term. Apple co-founder Steve Jobs and Facebook's Mark Zuckerberg are star examples.

Passion isn't something that lives way up in the sky, in abstract dreams and hopes. It lives at ground level, in the specific details of what you're actually doing every day.

We dream of having a clean house - but who dreams of actually doing the cleaning? We don't have to dream about doing the work, because doing the work is always within our grasp; the dream, in this sense, is to attain the goal without the work.

Strengths are not activities you're good at, they're activities that strengthen you. A strength is an activity that before you're doing it you look forward to doing it; while you're doing it, time goes by quickly and you can concentrate; after you've done it, it seems to fulfill a need of yours.