You said that the T pushed you to learn confrontations - I wonder where the T is now and how he or she is dealing with the aftereffects of your learning? I think a responsible T would handle the situation end-to-end.

In the meantime, you can write down your revenge plans on paper, by hand, and tear and toss that paper. You can draw your anger and revenge with colored pencils or colored chalk. Or, you can draw the revenge plans and then draw a cross over them, signifying that you have no plans of acting on any of the plans.

Another idea is rebuilding the relationship. Since you did not provide any details, it is hard to advise further.