Honey, I have been there a couple of times. Especially this year. Since November last year life has been very hard for me and it made me explode from rage a couple of times. So don't feel sorry for feeling this way because it's something you can't do anything about unfortunately. You want to feel better but sometimes life is so hard or mean you just have enough. I will never make fun of you or be mad at you.
One advice; don't keep it inside. If something is going on get rid off this anger.