Who said "I'm thankful for every challenge that makes me stronger."?

This quote is attributed to Ash Ketchum.

I'm thankful for every challenge that makes me stronger. - Ash Ketchum

"I'm thankful for every challenge that makes me stronger."

Ash Ketchum Gratitude

"Gotta catch 'em all!"

"I'm gonna be a Pokémon Master!"

"There's no such thing as a useless Pokémon. It's the trainer that makes the difference."

"The important thing is not how strong a Pokémon is, but the bond between a trainer and their Pokémon."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"