Something I've been trying to incorporate into my life for the last year, which is proving difficult, is to not utilize resources, be it money or time, on something that I don't plan on integrating into my identity or productivity.
Discussion
This has meant mostly cutting out philosophy, in particular, as it's a time sink with no practical advantage. Your instinct is usually correct, and I'm trying to rely on that more, reserving the literary only for storytelling or very practical informative context that will assist me in living a better life.