Clarke said: "I remember once as a player I was top of the league in November and ended up fighting relegation. The top division in England can come back quickly to bite you if you take your focus off it.
"This week we're happy with where we are. I know it sounds boring, but we just have to keep working from game to game.
"Our away performances have been as good as our home performances so this is long overdue.
"I don't really see it is a ***** off our back but it is nice to end it sooner rather than later and especially at such a difficult place as Wigan.
"Even though our away performances have been good, we have had a habit of losing late goals and dropping points and you start to think about that, so it was nice to hang on and get the 2-1 win."