Bruce told the Wigan Evening Post: "The mentality at the club last season was all geared to staying in the Premier League which we achieved in the second-to-last game by beating Aston Villa.
"The year before, the club had to wait until the final game at Sheffield United to stay up, and did so by one goal. I hope the mentality is different now - it's not enough to think that we have done our job.
"We still have seven games to play, five of them against sides who aren't safe from relegation. We have a lot to play for yet. We want to finish as high as we can, and we owe that to the supporters and ourselves.
"Every season a club like ours has to start out with the intention of getting safe, but with the good position we are now in, I want us to kick on.
"I will keep on at them, get back to some hard work on the training ground. I always find it difficult after an international break. A club like ours suffers. We are used to preparing for a game all week. For example, we started getting ready for Arsenal yesterday.
"When we've had players away at international matches, we only see them a day or so before our next game."