Here are two simple life hacks, both on the theme of Plan to Forget.
The first is from Kevin Kelly : when you look for something and eventually find it, put it back where you first looked. This applies equally to digital content — add your search term to the file name. In extremis, use Keyboard Maestro, Alfred, or similar to remap your search term to bring up the right thing. Doubly handy when you change apps and habitually keep trying to launch the old one.
The second is about physical reminders in your environment. We use the little cardboard cutouts from kleenex tissue boxes to write notes, many of which are reusable. Garbage collection, delivery expected, admin deadline, kisses my sweet, etc. Can put them out when thinking of the thing, increasing the odds of remembering when the time comes. We mostly put them on the table at the bottom of the stairs.