As I pose the question of how we "fix it," I can't help but question how we know if it's something to be fixed at all. I agree that it's making our lives today harder to bear socially and mentally. But, it could also be a natural part of the evolution of our species, perhaps this is the way to get to the trillion-people across multiple-planets scale? Perhaps we individually suffer, mentally or otherwise a bit more than the previous generation, to allow for the maximum number of humans to succeed at a given time.
I too miss being able to focus and long for the now seemingly serene world of the 90s. I too feel distracted by gadgets, apps, politics. But I'm also intrigued by the idea of a future where there are 100 x Einsteins alive, which may come at the cost of having 10000 x Kardashians.