The centre-back has been in impressive form since returning to a Clarets outfit who have won four and drawn one of their last five games.
That impressive sequence of results has left Owen Coyle's men in fifth spot in the Championship and automatic promotion has not been discounted.
Carlisle said: "We've got six massive games left and I know it's a cliche, but we are going to be taking each game individually and focusing on getting the three points out of everyone of them.
"It is in our hands and we have to make sure that we are the team to catch for the likes of Preston and Bristol City.
"We have to make sure we stay ahead of them by winning our matches and we just have to focus in house. If we can do what we do well then no doubt we will stay in the top six."