 We don't call it that, but you need to accept it. You need to put pain on yourself, which is that you need to say, okay, I'm going to sacrifice in this. I'm going to let go of my pride here. I am going to let go of this habit that I have. I'm going to do something for this person that I don't feel like doing. I'm going to endure or listen to something that I don't feel like doing. And that perfects you and that hurts. So you literally bring that pain on yourself. If you don't, there's going to be a greater pain later on.