Despite his country's impressive start to the tournament, Robben insists that the Netherlands still have plenty of work to do if they want to go further.
"If you told me that we'd win our three games to finish top of the group two months ago I'd have been delighted, but I don't want to end it here. We want to go on," he told FIFA.com.
"Although we want to enjoy the moment, we'll soon need to start to work hard in training to improve even more."
Robben and his Dutch teammates return to action on Sunday when they face Mexico in the last 16.