Steve Jobs // "I think most people that are able to make a sustained contribution over time, rather than just a peak, are very internally driven. You have to be. Because in the ebb and tide of people's opinions and of fads, there are going to be times when you are criticized, and criticism is very difficult. And so when you're criticized, you learn to pull back a little and listen to your own drummer. And to some extent that isolates you from the praise, if you eventually get it too. The praise becomes a little less important to you and the criticism becomes a little less important to you...and you become more internally driven."