My favorite:
14. Ignore cool. Successful people do not try to be hip, they just do work that excites them.
When working in a medium sized office setting, you tend to share links with your co-workers, and then forget to show your other friends. This is a demonstration of what a recent study claims we spend 25% of our office time doing (while maintaining or even increasing productivity). Our managers, on the other hand, would call them "distractions".
14. Ignore cool. Successful people do not try to be hip, they just do work that excites them.