Charlie Mulgrew admits to having been left 'devastated' by Celtic's 2-1 Co-operative Insurance Cup final defeat to Old Firm rivals Rangers.
The Bhoys suffered Hampden Park heartache on Sunday as Nikica Jelavic snatched an extra-time winner for the Gers.
That setback has denied Celtic the opportunity to land a domestic Treble this season, while they are frustrated to have missed out on the first piece of silverware of the campaign.
It is important that Neil Lennon's side are able to put the disappointment behind them, though, with the SPL title and Scottish Cup still up for grabs.
Mulgrew is determined to help the Bhoys secure a major trophy this season, and claims the international break could not have come at a worse time as the Glasgow giants look to make amends for their cup showing.
"It is devastating but we have to pick ourselves up as quickly as we can and get back to winning ways," said the centre-half.
"I don't think it changes things with regards the league. They have won the first cup but there is plenty still to play for.
"We have to pick ourselves up. We would like a game straight away and it's disappointing that the international game has come.
"When everyone comes back from that we will look forward to the next game and if we can get a win we can kick on hopefully."
Mulgrew has also denied that over-confidence cost Celtic on cup final day, with Lennon's troops having entered their meeting with Rangers as firm favourites.
"I don't think you can say that," he said.
"If Gary Hooper had finished that chance at the end and we had won on penalties I don't think you would be asking that question.
"It could have went either way but unfortunately it went for Rangers.
"It was a good game. I don't think we deserved to lose but I don't think we deserved to win. We are disappointed."