6. Do your homework
"When you go to your boss with an issue or problem, make a list of the specifics you want to address, research the issue and get your facts right. When you have everything ready, schedule a meeting, and be cool and professional."
7. Don't complain
"Watch what you say to anyone at work. The only reason to bring up negative issues is to create a plan for correcting them. Complaining for the sake of complaining can alienate colleagues and create a bad environment. Better to save it for message boards."
8. Let go of your anger
"Sometimes it's hard to get past your own feelings of anger or hurt and your need to get them out. Write how you feel in a letter and mail it to yourself, or keep it at home. Then resolve to put your anger aside. If you're curious in a couple of months, read the letter. You may be surprised at how those feelings have changed."
9. Don't take it personally
"Recognize that a criticism of your work is not a criticism of you, and don't let it damage your self-esteem."
10. Stick to the points
"Whenever you have to discuss something with a difficult coworker, write down three to five main points, and stick to them. Even if they get off the subject and start saying nasty things, always come back to your main points. That way, you avoid getting embroiled in an argument."
11. Keep people in the loop
"Don't spring any surprises on your boss or coworkers