Aesop's Fables (1884)
25. The Boy and the Nettle.
A Boy was stung by a Nettle. He ran home and told his mother, saying: "Although it pains me so much, I did but touch it ever so gently." "That was just it," said his mother, "which caused it to sting you. The next time you touch a Nettle, grasp it boldly, and it will be soft as silk to your hand, and not in the least hurt you."
Whatever you do, do with all your might.
Aesop's Fables: A New Revised Version From Original Sources (translator not identified), 1884 . Illustrations by Ernest Henry Griset (1844-1907), John Tenniel (1820-1914) and Harrison Weir (1824-1906). Available online at Project Gutenberg.