Little things can make you happy or sad. 

Your thoughts guide which it it.

Every little instance of a thing has positive and negative outcomes. (So does every big instance of a thing: births, marriages, bereavement etc).

The big things don't happen every day but the little things do. 

Does the tree in your back yard needing trimmed make you think "shit I have to spend money", or "I have a lovely tree which I need to take care of".

Big things happen and you can't stop them, but they don't happen for you every day.

Little things do happen every day and you can control how you respond to those. Those little responses form a little train of however it is you react.

Go do your awesome dance!!!