Crawley Town first-team coach Guy Whittingham has challenged the Red Devils to go flat out in their remaining 14 games following the boost of their first win in four matches.
A well taken first-half goal from midfielder Mike Jones proved enough to give John Gregory's men victory at home to Colchester, and Whittingham believes there is no reason why they should not go on a late charge with the games in hand they have on the other clubs in League One.
Whittingham felt Crawley had to "grind out a performance" against the U's but he has no doubt the clean sheet will increase confidence ahead of Tuesday's sell-out home game against top-of-the-table Wolves.
He said: "You have got to look above you to see what is possible. You have only got to look at Sheffield United. Before they went on their run they were losing games left, right and centre, so you have got to believe you can do it.
"We have got to prove we are not a bad outfit. This club has come a long way in a short space of time and we are looking forward to the challenge of facing Wolves on our own ground."
Crawley are currently 14th in the table, 15 points off the play-offs, and Whittingham added: "We've got a lot of games left and a difficult run of fixtures so we have to make sure our energy levels stay high.
"The clean sheet was really important and you can build on this type of display - when you have to grind out a performance."
Colchester boss Joe Dunne is demanding a reaction from his players against Shrewsbury on Tuesday following his side's fifth defeat in the last seven outings.
He said: "It's not about tactics now, it's about guts, determination as an individual and as a player.
"We got a reaction in the second half at Crawley and now we must step up to the plate - it's about winning now.
"We can pick a team that can compete. It's about determination and to be ready to give everything on Tuesday."
Dunne admitted that his players "did not show up" in the first half at Brunton Park but felt they ultimately deserved something from the game after Sanchez Watt and substitute Dominic Vose were both denied by the woodwork.
He added: "Crawley went in front with a very well-worked goal and we had to have a chat at half-time.
"I wanted to see us play to our maximum and in the second half we got hold of the game, won more second balls and dominated more of the territory.
"We hit the post and the crossbar and deserved something from the game. But we must stay positive, it's not good being negative."