So to focus, one has to ignore – a lot. The more inputs you have coming into you simultaneously from different directions with insufficient (normal) barriers to entry, the possibilities become overwhelming.
Of course, big picture, life is short, so that’s certain. Slightly smaller picture, if time is scarce and you have to eat to survive but you want to thrive and not just survive, time becomes a commodity to spend towards increasing whatever the metrics for thriving might be at the cost of the time used for the effort. So, it goes to a question of purpose.