The most powerful sign is that your work no longer enchants you - it's not deep, delightful, and mutually satisfying. When this happens, it may be time to look for new challenges.

Unfortunately, they develop a fixed mindset that they're the most talented, and they think that continued success is a right. Problems arise because pure talent only works as long as the going is easy. Furthermore, they don't take risks because failure would harm their image of being the best, brightest, and most talented. When they do fail, they deny it or attribute it to anything but their shortcomings.

Ambitious failure, magnificent failure, is a very good thing.

Do you know what the difference is between PR and advertising? Advertising is when you say how great you are. PR is when other people say how great you are. PR is better.

You say: "I'm a blue sky thinker." Investor thinks: "You have no business model, and you don't know how to ship."

Better to fail at doing the right thing than to succeed at doing the wrong thing.

Great leaders are paradoxical. They catalyze, rather control, the work of their teams. They have an overarching vision for the team but are not autocratic in the realization of this vision. Their eyes are open to whatever results occur-not just planned goals, because serendipity is a great innovator.