Walt Disney's newspaper editor told the aspiring cartoonist he wasn't creative enough.

Wikipedia

In 1919, Walt Disney was fired from the Kansas City Star. According to his editor, he "lacked imagination and had no good ideas."

That wasn't the last of his failures. Disney then acquired Laugh-O-Gram, an animation studio he later drove into bankruptcy. Finally, he decided to set his sights on a more profitable area: Hollywood.

He and his brother moved to California and started producing a successful cartoon series.