Johnson says the players have already got the Norwich game out of their system, and they will be raring to go again by the time Manchester United arrive in town.
"Footballers are a resilient lot and the lads are already putting the weekend behind them," he told the Evening Chronicle.
"Training has been good. We've had some shooting competitions and enjoyed it; I think that's what you have to do.
"You have to come in and move forward rather than dwelling on any disappointment you might just have had.
"If you let bad results affect you going into your next game, you'd be lost."