United have lost their last four League matches, and have taken just eight points from their last 12 games.
But the players were boosted by the 1-0 FA Cup second round win over Aldershot, and a spirited performance against league leaders Swansea City.
He told BBC Radio Humberside: "We're working hard, and taking confidence from our past two performances.
Laws confident for Barnsley trip
"We will turn it round, I've every confidence in the players to do that. As long as we keep working hard we will turn things round.
"It's a cracking game in store at Barnsley, and every players wants to play in it and we'll go there with confidence."