While playing in a tennis tournament, Courtney can feel herself getting upset at a call the linesman made on a ball she felt was just inside the baseline. Believing it was a bad call, Courtney was able to demonstrate excellent self-control when she responded by:

Criticizing the linesman for their poor eyesight
Shaking it off and focusing on the next point
Slamming the edge of her racquet on the ground and kept silent
Tossing a tennis ball into the air and hit it out of the court area