Jurgen Klopp stressed that even the likes of Cristiano Ronaldo and Lionel Messi are not immune from dips in confidence.
Liverpool have endured a difficult start to the season, with a 3-3 draw at home to Brighton on Saturday leaving them with only 10 points.
Napoli ran out 4-1 winners in their last Champions League outing too, putting even more pressure on Tuesday’s clash with Rangers.
Klopp is remaining patient but knows the tie at home has already become a key game in Group A.
"People can ask how could it happen that these players are not full of confidence?" said the Reds boss.
"Do you think Cristiano Ronaldo at this moment is top of his confidence levels?
"He was for ages the best player in the world and now it is not going his way and it is not exactly the same. That happens to all of us.
"Lionel Messi played last season (his first at Paris St. Germain) where it was not exactly the same because these kind of things are really important to all of us and you have to work for it.
"You have to take the little things to take a step in the right direction and be really ready for the moment when it is back and that is what we are doing."
