Gus Poyet's men are currently in 18th place in the table and a point from safety, although they have at least a game in hand on all their closest rivals.
However, Colback is confident that, if they can produce the level of performance they did to leave Manchester City trailing until 10 minutes into the second half in the final, they will get themselves out of trouble.
He said: "If we apply ourselves like we did on Sunday, then the wins will come naturally.
"That's what we have got to look to do because we are still in an awkward position in the league and we need to win the games that we have to.
"If we apply ourselves the same way and have the same hunger and the same passion, then we should win the games comfortably that we need to.
"We still have 11, 12 games to go in the league, so we need to brush ourselves down now.
"We have got the FA Cup game on Sunday and then we have got to look to the league and win the games to keep us up."
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