Celtic skipper Scott Brown is hoping the club can return to the winners list this weekend after their 1-0 League Cup loss to Kilmarnock on Sunday.
The Hoops were beaten for the first time in 21 matches since on the weekend but Brown is targeting a very quick reversal when they meet Old Firm rivals Rangers at Ibrox on Sunday.
"There are so many different situations going round in your head.
"It's hard to sleep after a game never mind a cup final. You just think about what you could have done and what you could have done to prevent the goal.
"It's a bad time now but when Sunday comes it's got to be out of our heads. It's a terrible defeat to take. It really hurt but we have got a league to win.
"We have a big game at Ibrox and it could possibly be the league winner.""There's just so much going around in your mind - what I could have done, what I could have done better, what other players could have done and could other players have helped you out," the Scotland midfielder said.