Excercise every day with “scientific 7 minute workout”. Also 20–40 minute walks or 100 basketball jump-shots.
Draw daily, even a 5 minute drawing.
Write daily, even for 5 minutes.
Publish first original song, publish first EP. Learn a new song or practice one or two from existing set. Keep learning piano by learning songs you like: https://hypertexthero.com/piano/
Write postcards to people.
Set up a weekly “office hours” livestream to help people with design or technical computer issues.