First, I know just from my interactions with you on here that you are not a mean person. In fact, you are the nicest person I've met on here! It sounds like you have a lot of pain in your heart that you are living with. I think it is easy to turn to anger when we live with a lot of pain in our hearts. If you aren't hurting anyone or yourself, I think it's ok to let the anger out. Letting it out at dumb stuff like the TV is a safe outlet in my opinion. The thing is to just let yourself feel what you feel, accept it, and move on. Don't beat yourself up or hang on to it. Hugs!