The Importance of Quantified Self in Science Fiction

I haven't actually seen reference to that in any sci-fi movies, or I didn't think about it reading the book either. There's a lot of things that we found out that we find or didn't find in science fiction that strike us as great opportunities for science fiction to expound on. At the same time, we see very little use of networks and the kind of applications and uses that we use today. So there are big blind spots inside by for sure.