tiny habits, b.j. fogg
https://tinyhabits.com/
atomic habits, james clear
https://jamesclear.com/atomic-habits
various
take pets or friends for walks
practice getting rejected
read
put things away when you are done with them
floss
do one thing that makes you uncomfortable or scares you each day
use waiting periods productively
say or do something nice for someone
don’t put off doing the small things
set your 3 most important tasks to do before bed