sing before breakfast, you'll cry before night

and sing before breakfast, you'll cry before supper

Prov. If you wake up feeling very happy, your mood will change before the end of the day. Jill: I woke up in such a good mood today. I don't even know why, but everything seems good. Jane: Sing before breakfast, you'll cry before night. Alan: Good morning, dear! Isn't it a wonderful day? I feel great. Jane: Sing before breakfast, you'll cry before supper.