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 KawasakiLook back to the old days: people bought an MS DOS machine and struggled with it for weeks to bring it up to speed. Then Apple created Macintosh, struggled a bit with it, but eventually succeeded. Then it went into other businesses. If your company truly wants to change the world, it would make these problems go away for customers.
Guy KawasakiJolt is for Windows programmers. It's typical IBM PC: it goes in brown and comes out yellow. Mountain Dew is for Macintosh programmers: it goes in yellow and comes out yellow. It's WYSIWYP.
Guy Kawasaki