A not quite obvious side effect of this - you should be aware of the vast majority of things you do that you are not in the top 5% - and don’t sweat it. Most things in life just need to be done, not done exceptionally well, so spend your effort on the things that matter. For example, I shop pretty badly at the store, no list, no plan - not worth it to me to develop those, I can spend time elsewhere on the things I ca…
Using a shopping list would actually save you time to spend elsewhere rather than at a crappy grocery store :)
Instead optimizing for putting productive energy towards real goals and avoiding menial tasks that at best save some time seems like a more optimal strategy.