I am going to get fired from my job

Kinda sucks because I got badmouthed by 2 coworkers who are supposed to be my back-up and who I helped get a promotion. They were writing bad things behind my back and my boss collected all the negative feedback and now wants to fire me and I don't feel like I got to say my side of the story. I have a hearing session this thursday, will get to defend myself but there is no chance I still want to work there honestly.