Liverpool boss Jurgen Klopp admits his side may have to suffer if they are to reach the Champions League final.
The Reds have a 2-0 lead from the home leg in their semi-final against Villarreal.
They take on the Spanish outlet on Tuesday evening in Spain, and Klopp knows it could be a very different game to the first leg.
He told reporters at a pre-match press conference: "I do [confident the team can suffer through difficult moments]. The thing with all these things during a season – obviously in the situation we are in, it's clear we must have done something right in the last few weeks and months – but the problem in our job is everything is perfect until this moment I'm sitting here and now the next game we start on the wrong foot or whatever and all of a sudden the game gets a different dynamic and all these kinds of things. It's good to know, it's more a feeling inside, it's not that we are flying constantly and high-five here and there. We know we are in a good moment, that's true.
"But if you now go the other way around, what would you do if you lost the game 2-0 away, maybe not happy with your performance, knowing you can do better, with your own crowd in the back. Why should I think about what we did in the past? My only concern is what we do tomorrow night. So, we have to be ready to suffer. Not go down or whatever, that can happen in all football games, I'm not thinking about that. Giving a game the right direction. Let's think: they have the first shot on target or whatever, the crowd goes up, each challenge, the crowd is there. That's how it is.
"Actually, a good example was Newcastle now because the crowd was obviously very passionate as well but we didn't let it happen, which was the biggest quality of this game. It was not a show of football brilliance; we had our moments and of course could have scored more goals. But how clear-cut the performance was, that was incredible. And that's what we have to be. Yes, emotional. Yes, being there really ready to play the best game ever, but knowing it will not just happen in all moments. We want to press here and there, but outplaying us still can happen. Suffering doesn't mean you suffer for long, it means you suffer and react – and that's what we have to do."