The way I pictured it, all this grief would be like a winter night when you're standing outside. You'll warm up once you get used to the cold. Except after you've been out there for awhile, you feel the warmth draining out of you and you realize the opposite is happening; you're getting colder and colder, as the body heat you brought outside with you seeps out of your skin. Instead of getting used to it, you get weaker the longer you endure it.