Brand, thing, behavior, method, advice, mantra, etc.
I swear by Blackwing pencils.
Also, the ‘two minute rule’, which has really improved my life: “if it takes two minutes or less to do, just do it now; if it takes longer, schedule it.” I’ve got untreated attention issues and it’s very easy for me to notice something needing done, and overlook or procrastinate it because it seems inconvenient in the moment. Having a totally painless rule that forces me to acknowledge that thing I should pick up, that trash bag I should change, etc, or, to at least put on my calendar anything I mustn’t forget in the long run has been great for me.
Most of the time there’s a cap after which there are diminishing returns. A $700 phone will probably last you a good 3-4 years, compared to a shitty year or two with a $300 one. However, a $1500 phone isn’t gonna be that much better and won’t last that much longer to be worth it.