19.

A mother said to her daughter: "Please do not tell lies anymore. Each time you tell a lie, I get a grey hair." Her daughter said: "Oh, I see. That is why my grandmother has so many grey hairs!"

From:Sri Chinmoy,Relaxation-secrets for the pressured mind, Agni Press, 1988
Sourced from https://srichinmoylibrary.com/rsm