So whenever you feel negativity arising within you, whether caused by an external factor, a thought, or even nothing in particular that you are aware of, look on it as a voice saying "Attention. Here and Now. Wake up." Even the slightest irritation is significant and needs to be acknowledged and looked at; otherwise, there will be a cumulative buildup of unobserved reactions. As I said before, you may be able to just drop it once you realize that you don't want to have this energy field inside you and that it serves no purpose. But then make sure that you drop it completely. If you cannot drop it, just accept that it is there and take your attention into the feeling, as I pointed out earlier.
— Eckhart Tolle