"The only thing I had control over was myself and my attitude. When I finally realized that, that was the moment the trail started to get easy." Jennifer Pharr Davis (from the National Geographic talk online)
That the one? Though I believe Jen revised the wording along the way in other talks slightly. (the get easy part). Or maybe she simply misspoke in that talk.
Can't recall exactly how it came up but she had disagreed with the quote above with me at some point and I know the statement was modified in future talks. Ted talk maybe? or maybe in 'Called Again'.
Either way... that's the version I like better. That's her problem if she wanted to change it