Activating Heather Gollnick

The 36-year-old pro triathlete and mother of three may be small in stature (5'-0"), but she has some big accomplishments fueled by a positive attitude.

"On the handlebar of her bike, she puts a sticker with a spiral design. The idea is that positive thoughts, like negative ones, will build on themselves to great effect. 'Especially at long distances, it's so mental,' she said. 'When I see pros with bad attitudes, they don't have much success.'"