Tottenham full-back Ben Davies revealed the entire squad is suffering from their 4-2 defeat to rivals Arsenal on Sunday
Spurs headed into the break with a 2-1 lead at the Emirates after goals from Eric Dier and Harry Kane cancelled out Pierre-Emerick Aubameyang’s opener.
However, in light of Arsenal coach Unai Emery’s double substitution in the during half-time, Spurs conceded three goals after the break to lose the North London derby 4-2.
The result also saw Arsenal leapfrog Spurs into fourth-place in the Premier League table.
“It’s a horrible feeling losing the derby,” Davies told the club website.
“Losing the derby hurts a lot. it’s about us dealing with that now and trying to put it right in the next few games.”
“It’s a very disappointing result but we have to go away, try to get it out of our minds now and focus on the next games coming up.
“They came out of the blocks, but we had a really good go and got back into the game.
“That’s why it’s so disappointing we let it slip. Those are the games where you sometimes have to grind it out and we didn’t do that well enough.
“You have to deal with the highs and the lows. That’s football. Obviously, losing the derby hurts a lot and it’s about us dealing with that now and trying to put it right in the next few games.
“We have to make sure we pick up three points against Southampton and bounce back straight away.”
Spurs will host Southampton at Wembley on Wednesday with kick-off set for 21:00 (CET).