1. Do one thing at a time.
2. Know the problem.
3. Learn to listen.
4. Learn to ask questions.
5. Distinguish sense from nonsense.
6. Accept change as inevitable.
7. Admit mistakes.
8. Say it simple.
9. Be calm.
10. Smile.

From the archive:

Benjamin Franklin's 13 Virtues:

It was about this time I conceived the bold and arduous project of arriving at moral perfection.

For this purpose I therefore contrived the following method.

Powell's Rules:

Avoid having your ego so close to your position that when your position falls, your ego goes with it.

Rumsfeld's Rules, including this one, from H.L. Mencken:

For every human problem there is a solution that is simple, neat and wrong.