Nottingham Forest manager Aitor Karanka said his young squad must learn and do so quickly if they are to correct their mistakes.
The Reds lost at Hull on Saturday and Karanka wants his side to learn from that defeat as they head into Tuesday night's clash with Preston at The City Ground.
He said: "We have a young group of players and we finished the game on Saturday with seven players younger than 23. They have to learn but the main thing for me is that they produce on the pitch.
"If we correct our mistakes, then we will improve but the main thing is the commitment and I couldn't say anything bad about them as they did their best until the end.
"They have to improve, it is good for their personality and for their careers. This is football though; you don't have time to regret or to be sad, you have to forget as soon as possible, learn and be ready for the next challenge.
"The game tomorrow can be a good chance for revenge and to show the crowd. It is important to win at home as there were 4,000 fans at Hull and another big crowd at Fulham next weekend, but we must keep the fans happy here at our own stadium."
Alex Neil's side have been performing well so far and are close to the play-off spots, meaning that a tough game is expected under the lights on Trentside.
"It is another tough game," Karanka added. "Preston are going well and the manager is doing a good job. I know him but it is about us.
"I said after the Hull game that football is great as it always gives you another chance and when you lose a game like on Saturday, to have another game quickly is the main thing.
"The players need to recover as well as possible physically and mentally. You always learn things from the game, when you win but especially when you lose."