Benitez is hoping his side can build on their victory over Wolves on Boxing Day by taking another three points from tonight's trip to Villa Park.
"After the win over Wolves, we will now have more confidence and that will be very good for the whole team," he said.
"But we know we have to keep winning to get fourth place. We need clean sheets and we now have to be ready for Aston Villa.
"We must discover if we have the confidence now to win there and to get closer to the top of the table.
"But we know Villa are a very good team who are ahead of us, and one we must beat.
"To get back to where we want to be we must start winning games in a row. If we do that at Villa it will be easier for us to keep our confidence higher."
