Wigan captain Gary Caldwell insists they must stop conceding first if they want to avoid relegation from the Premier League.
The Latics have a knack of falling behind in games, as was the case in Sunday's 1-1 draw with Norwich, a game in which they controlled the second-half.
Caldwell insists bottom side Wigan are not a bad team, but accepts that they cannot afford to give their opposition a head start any more.
"It was a sloppy start," he told Sky Sports. "We have to look at ourselves for that. We let Norwich into the game and gave them a goal start.
"It's difficult after you do that against good teams. But we came out second-half and had a right go at them. But we couldn't get that second goal and get the three points.
"When we play well and work together as a team, we're not bad. I think in the second-half we showed that today.
"It's only short periods in games when we let ourselves down and give ourselves a mountain to climb."
Wigan remain bottom of the table, but will be buoyed by a much-improved second-half display, much of which was down to substitute Shaun Maloney.
Caldwell hopes the team can carry their second-half show into their next game against West Brom, and is refusing to throw in the towel in an increasingly tight relegation scrap.
He said: "We couldn't quite do it today, but we've still got belief and I think we showed that today.
"The boys who came off the bench today made a real difference to the team and that can only be good for us."