I am likewise terrible at using consumable stuff. 1/day things I for some reason don't see a problem with using, although i still conserve somewhat on them, but items that have a limited amount of uses ever? NEVER USE THEM. This is ironical because in, say, Skyrim, a thousand potions of minor healing are still useful because combat is paused while you use them, but in DnD chugging potions, even powerful ones, is a terrible waste of your actions.