"I'm really disappointed at every event if I don't do less than what I wanted to do"

In this quote, professional snowboarder Shaun White reveals his dissatisfaction when he does not meet his own expectations at occasions. He uses the word "dissatisfied" to communicate a strong feeling of dissatisfaction or sadness. The phrase "do less than what I wished to do" suggests that White sets high goals for himself and is disappointed when he disappoints accomplishing them. This could be translated as a sign of his determination and drive to constantly enhance and push himself to do better. It also reveals that he holds himself to a high requirement and is not pleased with mediocrity. In general, this quote highlights White's strong work ethic and his desire to always provide his best effort.