You must take care of yourself, or you are no good to anyone else. Don't ignore how you feel in hopes things will improve or it will go away. You feel that way for a reason, and if you can do the work to figure out why, you will be so much better for
Not a revenge-oriented person, but really. No need to even avenge ourselves. (1) God is our avenger (2) Bitterness is poison (3) Some people just don’t deserve that place in your life. Hate and bitterness take too much energy that could be put.