Here's an ideal-ish day for me:
Wake up to a large cup (or three) of strong coffee and spend the morning ticking things off my to-do list.
Pack up all necessary gear and head out on a climbing/biking/hiking/surfing/camping/wandering adventure, preferably somewhere I have never been before. Do not stop until exhausted and famished.
Come home to cook a feast of epic proportions, enjoy with a delicious beer/wine/booze of sorts if the mood strikes.
Read until sleepy, then curl up, go to bed and repeat.
I think it accurately shows what makes me smile.