Childlike enthusiasm

"Damon perhaps five years old, woke me early one summer morning shaking my shoulder with both hands. 'Wake up, wake up Daddy, it's the world's best day and guess what?' He leapt on me, 'Hooray! We're in it!'"

Damon Courtenay to his father Bryce; "April Fool's Day" p56 

When was the last time you were so overjoyed to see the start of a brand new "best day" and be grateful that you could enjoy it?