There are many different kinds of toxic friends: the narcissistic friend, the friend you have to make all the plans with, the flaky friend, the friend who takes advantage of you, and the friend you have nothing in common with. Some you hang on, and others you need to get out of your life. But firing a friend isn't an easy decision, especially if you've been friends for a long time.
One of the worst kinds of a bad friend is the negative friend, because they will actually get in the way of your happiness and every moment you spend with them will chip away at your self-esteem. Negative people bring you down with their constant pessimism, bad moods, bitterness, and their gift at being able to dissolve your joy within seconds. An overly negative person doesn't even have to direct their negativity at you for it to affect you. So how do you know if someone is too negative to be in your life?