Writing was suggested, and having your T read it. My suggestion is writing and don't even read it again yourself. Destroy it.

What to write?

Plenty of times during the day things will bother you, right? Write what happened, and how you felt about it. Write why it bothered you. It isn't about the other people. This is about your reaction. The same thing can happen to dozens of people and each one will feel differently about it. Even from day to day, you will react differently to the same situation. Finally, write about how you got into the situation to begin with, especially if it is one of those things that keeps happening to you. This isn't about blame. This is like being in a dream. It is just tracing things back, because there is a tendency to just find yourself in a situation without knowing how you got there. So trace it back. Keep in mind that it could be something as simple as being tired and hungry.