Ideas are cheap and plentiful. Walk up to anybody on the street and they’ll give you a viable business idea. With 7.5 billion people in the world, there’s bound to be at least 1,000 true fans who agree.
Execution, on the other hand, is valuable and scarce: finding and connecting with true fans, taking risks, selectively ignoring praise and criticism, staying true to your mission, inspiring others, and above all else, being persistent.
Flawless execution can save a flawed idea. The are few, if any, flawless ideas that will succeed in spite of poor execution.
100 Words of Fortitude 