Here’s a simple “fill in the blank” exercise.
Just for the fun of it before you fill in the blank concerning what gives you joy here are a few synonyms for joy:
Substitute one of these synonyms for joy as you ask: what gives me (for instance) happiness?
What gives me pleasure?
What gives me comfort?
You get the idea and if you do this you’ll learn something about yourself. You might like it or you may not like it, but do it anyway. It’ll help you pass the time while you’re sitting in the dentist’s office.