Everything goes in the calendar. Especially regular but infrequent things like birthdays. I set reminders a few days to a week before so I have time to adjust plans / buy presents or whatever.

If I’m having trouble motivating myself to do something, I commit to doing a bare minimum amount. For example going to the gym if I’m feeling unmotivated I might commit to just doing one exercise. Dishes maybe I’ll just wash one plate / pan. Once I’ve used that to get over the initial hurdle I’ll usually be able to ride the wave and complete everything.