So I have this co-worker who really annoys me. What should I do?
Hmmm...I, too, have experienced the difficulties of annoying co-workers and I would say the best thing to do is find out what YOU are doing wrong. When you're annoyed with someone it's typically because you have, either conciously or inadvertently, triggered some annoyance on them. Maybe you stand a little too close, maybe you breathe a little too loudly, maybe you shower too infrequently. Reflect on your daily habits and I'm sure you'll find the answer to your problem was right in front of your nose. Good luck!