American sprinter Melissa Jefferson-Wooden achieved an incredible gold-medal sweep at the recent World Championships, but surprisingly, she's expressed that she's "not satisfied" with her performance.

This feeling of being on top of the world is a new one for Jefferson-Wooden, and with that means a new approach to the future. Four days on from her unforgettable weekend, Jefferson-Wooden told CNN Sports that she’s “not satisfied” after her accomplishments this year.

“The biggest lesson I got from this year is learning that if you lock in and dial in on things you say you want to achieve but also put the hard work in on top of that, the sky is the limit,” she said. “There are so many things out there that I’ve accomplished this year. But there’s so many more things that I do want to accomplish.”