Shunsuke Nakamura has warned his Celtic team-mates determination alone will not be enough to land them a fourth straight Clydesdale Bank Premier League title.
The Hoops have seen the seven-point lead they opened up after December’s Old Firm derby win slashed to just two following a draw and defeat in their last two games.
Celtic could find themselves playing catch-up for the first time since November if Rangers win at Aberdeen on Saturday lunchtime.
And Japan midfielder Nakamura believes the kind off errors which have cost the champions dear since the turn of the year must be eradicated if they are to reclaim top spot when they play Hibernian later that afternoon.
He said: "Toughness, physically and mentally, will be really important for us from now on, but we won’t just win the title through determination.
"I think we have to learn from the mistakes we have made in the last few matches. We have drawn against Dundee United and lost to Aberdeen, but we must use those experiences to improve.
"Hibs are a good side and we know that it will be difficult against them. At home, we still have a good record, but we need to control the game more.
"Against Dundee United, we were under pressure for spells of the match. We need to concentrate on making passes, keeping the ball and making sure we control the game.
"It won’t be easy though. Hibs have strong attacking players. They pass the ball well and look to get players forward."