A frustrated Roberto Martinez believes Wigan have become their own worst enemy this season.
Wigan followed their 9-1 humiliation at Tottenham last month with a 1-0 victory over Sunderland, underlining the level of inconsistency that is maddening for Martinez.
"Since the beginning of the season the inconsistency from one week to another has been our biggest problem, and we are our biggest enemies," he said.
"The work is being put in to get rid of that, but sometimes it takes a little longer than we would like, and is a sign of the many changes that have taken place within the club.
"But clearly the inconsistency is something we need to eradicate as soon as we can because until we are consistent we won't be able to fulfil our potential.
"We have shown that when we play well and are on top of our game we can beat anyone, and that's a fantastic sign."
Like many Barclays Premier League sides, Wigan face six matches in the space of 23 days, a period which can often make or break teams.
"For the first time this season we've a spell where we don't have an international break, no distractions, and we can concentrate on these games in a very short period of time," added Martinez.
"It's important we maintain the level of performance we displayed against Sunderland, to rid ourselves of this inconsistency.
"December, January and February are three months we're looking to do that, but this month is a special one with a lot of points to play for."
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