Lions boss upbeat despite Barnsley lossMillwall manager Ian Holloway says his side have more than enough time to turn their season around with 14 games to go before the end of the Championship campaign.
Jim O'Brien's fourth-minute strike condemned The Lions to a 1-0 defeat at Oakwell, and Ollie says his men must dust themselves down and regroup ahead of next week's home clash with Brighton & Hove Albion.
"We could have gone a long way to making our season easier today, but we didn't," he said.
"It's as bad a result as I've had in a long time, mainly because of the magnitude of what a win would've done.
"In a way we're back to square one, but we've got 14 games to go now, which is a lot of matches. We created more chances than them, but they took one of theirs and we didn't. Unfortunately it's as simple as that.
"But I can assure the fans, who were brilliant again today, that we will work our socks off to get this right for them. We have to remember that there is a lot of football still left to play.
"Last season we stayed up by a point on the last day. I knew this would be a tough job, but I'm enjoying the challenge, I really am. We've made a lot of changes in a short space of time and like I've said before, I've been impressed with what the lads have shown me.
"What we have to do is keep improving as a group. The lads are upset in the dressing room, but with me they will work so hard to turn it around for this football club, I promise our supporters that. It's all about doing things better as a team.
"Barnsley's goal was one long ball over the top which we didn't deal with and that gave us a mountain to climb. But before it we were on a counter attack and lost possession when we could have kept it. If we did, the chance for them to score wouldn't have come.
"The problem we have is that we're conceding the first goal in games, which we can't afford to do. If we can keep more clean sheets, and continue creating the number of chances that we have been doing, then we can start getting the results which will leave us looking at the teams above us rather than the ones below."