Captain Nathan Clarke says Leyton Orient must not dwell on Saturday's heavy defeat at MK Dons as they bid to avoid relegation from League One.
The O's, who were beaten 6-1 by the Dons, can move out of the bottom four with a win at Rochdale on Tuesday.
"We need to put it to one side as there's nothing we can do about it," the 31-year-old told BBC London 94.9.
"It is a group which is desperate to do well and get out of this mess. We feel as if it is still in our hands."
Orient were 4-0 down at half time against the Dons and Clarke said they must improve their performances before the end of the season.
"There were so many of us who were not at the races and we did so many things wrong," the centre-back added.
"As professionals, that shouldn't happen. We not only let ourselves down but a good number of travelling fans as well.
"There is no time to be sat looking through videos of what we have down wrong and what we have done right.
"We will be desperate to prove ourselves to, fans, family and the manager. We need to be upbeat and positive."