What was your best day…of just not caring?
What was your best day…of seeing all that hard work finally pay off?
What was your best day…of being praised by someone you respected?
What was your best of day…of finding success in something different?
What was your best day…of having a lot of fun in a completely new place?
What was your best day…of beating your rival for the first (and perhaps only) time?
What was your best day…of being someone others looked up to?
What was your best day…of not having a single worry in the world?
What was your best of day…of finally getting that person or thing that was going to be with you for the rest of your life?
What was your best day…of proving yourself in your field of work/study?