Brighton defender Olivier Boscagli was speaking to BBC Radio Sussex after their defeat at Aston Villa.
He said: "There are positive things to take. It was a real fight tonight against a really strong team. I think we did great in their stadium, we showed character. In this difficult period we have to keep going and we can't give up.
"There's a lot of things to use for the next game, we don't have a long time to think about it because we have another game in three games.
"That's the reality of this high level in the Premier League, you make one mistake, you conceded one goal. We have to try to erase these mistakes and we'll go to Liverpool with confidence with what we saw tonight, and we'll try to fight again for the next round.
"We are disappointed but there are also a lot of positive things."