Who said "Why do I always feel like I'm missing something in life?"?

This quote is attributed to Charlie Brown.

Why do I always feel like I'm missing something in life? - Charlie Brown

"Why do I always feel like I'm missing something in life?"

Charlie Brown Life

"Good grief!"

"I got a rock."

"Rats! I did it again."

"Why is it that everything I do turns into a disaster?"

"Life is meant to be lived with passion."

"Life is what happens when you're busy making other plans."

"Life is a journey, not a destination."

"Life's too short for regrets."