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.
Guy KawasakiYou know, if you're Guy Kawasaki and you create a car that gets 500 miles a gallon with zero emissions, people on the Internet would say: 'I could have done that in half an hour, and it's been done before. What's the big deal? I expected something more from him.' Meanwhile, they didn't do it, right? They're still living at home with their mothers.
Guy KawasakiWriting a book isnโt an easy process nor is it always enjoyable, but it is one of lifeโs most satisfying achievements.
Guy Kawasaki