I’ve been there. Three times. And no. You don’t feel a sense of relief. You do however develop a distinct clarity regarding what is important to you and what not. And you want to do those things and nothing else. When you survive it, you think, very differently about the world, and have far fewer ‘fears’ other than not appreciating every day you have. You could misinterpret this clarity as relief. But you don’t feel relief. You simply relieve yourself of those things that do not matter to you, and worry exclusively about those things that truly do.