Who said "Never let others define what you can or cannot do."?

This quote is attributed to Timmy.

Never let others define what you can or cannot do. - Timmy

"Never let others define what you can or cannot do."

Timmy Perseverance

"Timmy!"

"Timmy timmy timmy!"

"Timmeh!"

"Timmy loves his friends."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."