Please help what does this mean?

“Just remember, the same as a spectacular Vogue magazine, remember that no matter how close you follow the jumps: Continued on page whatever. No matter how careful you are, there's going to be the sense you missed something, the collapsed feeling under your skin that you didn't experience it all. There's that fallen heart feeling that you rushed right through the moments where you should've been paying attention. Well, get used to that feeling. That's how your whole life will feel some day. This is all practice. None of this matters. We're just warming up.”