Lamps is fearful of a hangover facing Galatasaray.
The midfielder said: "We were disappointed to lose against Aston Villa because we have been on a good run. There is competition at the top of the table but you have to wipe your face and carry on. Our thoughts must turn to this game.
"There are things we can improve on from the Villa game itself and it [defeats] can happen but it's very important we don't sit on that and worry about it.
"We have to think about Galatasaray and go in with a positive mindset and concentrate on getting through to the next stage. It helps to have a big game to focus on straight away. We all enjoy that, that's the beauty of football. If you have a bad result or performance you can always put it right very soon and that's what we aim to do."
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