I've been keeping on regularly using Anki and HabitRPG, both of which I recommend. I still exercise daily, have much more regular sleeping habits, study all my flashcards every day, etc.
Anki and HabitRPG make a powerful combo: Anki to memorize things, HabitRPG to remind me to use Anki every day.
This is the public group instrumental rationality diary for December 16-31.
Thanks to cata for starting the Group Rationality Diary posts, and to commenters for participating.
Immediate past diary: December 1-15
Rationality diaries archive