What does it mean?
Hard times don't scare you when you are learning to handle them. Skill and experience replace fear.
Who said it?
Louisa May Alcott: American novelist (1832–1888). Source: Little Women, Part 2 (1869).
Courage & fear– Louisa May Alcott, Little Women, Part 2 (1869)
“I'm not afraid of storms, for I'm learning how to sail my ship.”