The Hoops held top spot for a large portion of this campaign but a couple of poor results in recent weeks have let Old Firm derby rivals Rangers back in.
"It's easy to make excuses, but if you don't win the league then you have to look closer to home - and we will," he said.
"We've had a foot in the front door and it's closed again. But it's not over yet.
"Our priority was to win the league and it still is.
"It would be a major disappointment to me and to the club if we don't.
"We feel we've played very, very well this season and been very consistent.
"And if we don't win the league we will have to look back and say we haven't done enough in some areas in some games.
"We will just have to look to redress that next season."