[2] Sell is the president/CEO of the United States Chung Do Kwan Association (USCDKA)[3] and the only non-Asian female person to be recognized by the Kukkiwon as a 9th Dan Black Belt in the Chung Do Kwan style of Taekwondo, making her the highest ranked non-Asian female Tae Kwon Do practitioner in the world.

[7] Sell has been teaching and training in the art of Taekwondo Chung Do Kwan for over 50 years, alongside of her husband, Edward B.

This team uses Taekwondo to teach their Christian faith to places like schools, fundraising events, prison ministries, West Point Academy, etc.

[11] Today, Sell retains her leadership position with the United States Chung Do Kwan Association, and continues to train and teach throughout the country.

In 1977, she would become the first female to be awarded the World Taekwondo Federation certification for international level referee credentials.

She would create the first CD Rom training videos for all of the World Taekwondo Federation Taguek forms, become an ordained minister, be inducted into the Hall of Fame as an Outstanding Female Master,[14] and take the Crusade demo team to Osan Air Force base.

Sell was promoted to 8th degree black belt[15] by Park Hae-man in the World Chung Do Kwan Association, then in the Kukkiwon.