Medication, alarms, chore lists with reminders, project boards (jira @ work, notion @ home).
My wife and I keep EVERYTHING in notion. Our entire lives, pretty much any plan or thing we need to remember to do or communicate goes in that app.
I use other stuff on top of it, but notion has allowed us to split the mental load of managing our household much better than before. I have terrible memory, but I can no longer use it as an excuse. I've gone from "oops I forgot" to "oops I didn't set a reminder, what do I need to do to prevent this in the future?"
It wouldn't be exaggerating to say that the combination of process and home project management through it has saved my marriage. Oh, and I guess therapy helps. Find a good therapist if you can afford one.