“Look at a day when you are supremely satisfied at the end. It's not a day when you lounge around doing nothing; it's a day you've had everything to do and you've done it.”

Margaret Thatcher

(To which a clever friend of mine retorted: Because you know you can do nothing the next day)

Why put off until tomorrow what you can perfectly well do the next day?

Like take your heart meds?

"Never postpone until tomorrow what you can postpone until after tomorrow"