A friend of mine used this technique when he was hassled by several people like the neighbors and the old woman who hollered at you. He made weird faces at them and waggled his rear end at them, danced in place, threw his head back and howled like a wolf, and then said in a normal tone of voice: "I'll give you something to stare at, Peeper-Weeper!" He told me it didn't take long before the people started avoiding him.

As far as the situations at work, you might try this technique: when you get home, write down what happened like it was a story and then write a happy ending.The good thing about this technique is it works for all situations: you can give them all happy endings and at the same time help yourself process what you experienced.