The defending champions got off their World Cup campaign to a frustrating start as they lost 1-0 to Mexico and will next face Sweden in their second Group F game in Sochi on Saturday.
"We won't be satisfied with a draw, so we need to create chances and score. But we need to be patient and play the way we did in the qualifiers, when we dominated the matches. Perhaps our experience will help us in this game, but it is not a guarantee of success. We know that we will have to work hard," said Hummels.
Germany are widely regarded as one of the favorites to win the World Cup, which will continue until July 15.