For meds, do you have a weekly pill container? I have one with morning and night containers for each day of the week, and I leave it on my kitchen counter. I can see at a glance, and every time I go into the kitchen, whether I've remembered to take them.

For the rest, maybe establishing routines will help? Set up a place by the front door (or garage door, whichever you use most) with a spot for your keys and wallet and a hook for your jacket. Start putting those things there every time you come in the house. Then, when you're ready to leave, all the things you need to take with you are right there. Don't expect any new routine to work immediately; just keep at it and over time it will become a more reliable habit.

I don't have any advice about triggering your partner, other than letting her know that you're aware of the trigger(s), and that you're trying to develop patterns and routines that help you to avoid the trigger(s).