Success is a marathon, not a sprint. - Heidi Klum

"Success is a marathon, not a sprint."

Heidi Klum Perseverance

More from Heidi Klum

"One day you're in, the next day you're out."

"Make it work."

"You have one hour to create a look."

"I'm looking for something special, something unique."

"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."