Headlines 

• Difficult co-workers are good at yanking your chain
• Bullies often make provocative statements 

Don't get emotional. If you take their sarcasm, negativity or attacks personally you're going to react emotionally. 

Keep in mind 

1. Difficult people are generally difficult to everyone - not just you!
2. They often look to irritate you - so don't give them that power. 
3. Once they see that you're NOT irritated, they often back off.