The first whiff of coffee in the morning.
A new book on a rainy day.
Fleece-lined leggings in winter.
Singing a song you love at the top of your lungs.
Popcorn at the movies.
Hitting snooze on your alarm and not having to actually get up.
Finishing a really strenuous workout.
Finding out your favorite movie is on TV and you have time to watch it.
A stranger complimenting your outfit.
Beating the hardest boss in a video game.
When a bill is less expensive than you expected.
Catching a beautiful sunset or sunrise.
Lazy afternoons with a fuzzy blanket and a latte.
Getting a new haircut.
Browsing various homegoods stores, despite not needing to buy anything.
The smell of fresh spring flowers.
Collapsing into bed after a long, arduous day.
When your favorite song comes on the radio.
Bagels. Fresh bagels.
Winning at cards. Especially Uno.
Sitting at the fireplace on a cold night.
Making somebody else laugh with a lame pun.
The smell of new books. Alternatively, the smell of old books.
Getting a long-awaited email.
When somebody understands your obscure references.
The scent of freshly-cut grass.
When your favorite sports team wins.