“Life is what happens to you while…” – John Lennon

“Life is what happens to you while you're busy making other plans.”

– John Lennon, "Beautiful Boy (Darling Boy)" (1980)

What does it mean?

While we are planning the future, real life is already happening around us. Don't be so focused on plans that you miss the present.

John Lennon: British musician and songwriter (1940–1980). Source: "Beautiful Boy (Darling Boy)" (1980).