Wigan manager Roberto Martinez insists he is not prepared to play the blame game despite individual errors costing his side dearly recently.
The Latics have lost their last five Barclays Premier League matches with isolated mistakes turning out to be pivotal in affecting the result.
But Martinez stressed the squad as a whole have to work to address the issue, saying: "We know the defeat on Saturday [at home to Bolton] was self-inflicted and in a way it gives you a lot of margin to work on that because you can turn things around."
He continued: "It wasn't that the opposition was better than us or won a game without us being able to do anything about it, it was more a case of rustiness as a group.
"It is not just mistakes.
"Football is a game of errors and you shouldn't be punished for every mistake you make.
"But the side is so anxious to get positive results sometimes it goes against you.
"We shouldn't have got punished for those mistakes (against Bolton) as there are many other mechanisms and ways to avoid that and that is where the work is.
"You need to understand you have to have a certain urgency and fear of conceding and that allows you to correct those mistakes.
"We accepted errors and being punished by them and it is time to change that."