"The decathlon includes ten separate events and they all matter. You can't work on just one of them"

This quote by Dan O'Brien highlights the importance of dealing with all 10 events in the decathlon. He is suggesting that it is not enough to concentrate on just one occasion, as all ten occasions are similarly essential. He is emphasizing the need to put in the effort to deal with all 10 occasions in order to succeed in the decathlon. This quote is a pointer that success in the decathlon needs commitment and effort in all 10 events. It is insufficient to just focus on one event and expect to be effective. O'Brien is recommending that in order to be successful in the decathlon, one must put in the effort to work on all 10 events. This quote is a tip that success in the decathlon requires devotion and effort in all ten occasions. It is a pointer that success in the decathlon needs a holistic technique which all 10 occasions should be dealt with in order to be successful.