The Celtic playmaker has been refreshingly critical of himself.
And the Hoops playmaker has even admitted to being 'stupid' and playing while he felt his back, which has been giving him problems this term, was not 100 per cent.
The Norwegian is quoted as telling reporters by the Mail: "My form hasn’t been as good as it was last season; I am honest about that. I haven’t been at my top level.
"I have been a little bit stupid as well because I felt my back sometimes and I still played. I can’t do that. I need to be 100 per cent when I play, otherwise I am not at the level I want to be."
Meanwhile, the 24-year-old has also praised the likes of Tom Rogic, who have sometimes kept the Norwegian out of the Celtic side so far this season.
The only remedy, Johansen says, is to up his game: "I need to improve. You need to deserve to have a place in the team.
"We brought in a lot of good players and Tom Rogic has done really well in that position this season. That is a good thing. It keeps you on your toes. You have to show every day that you deserve to play at a club like Celtic."
Next up in terms of opposition are Molde, who sit top of Europa League Group A, having won once and drawn once during their opening two European group-stage games.
Celtic, then, face a tough task trying to beat the form team in their quartet away from home.
But two encouraging performances against Ajax and Fenerbahce suggest Johansen and co have what it takes to get a win in Ronny Deila's homeland. The Ajax game could have yielded three points had Emilio Izaguirre not been sent off, while the Bhoys led 2-0 against Fener.
The biggest challenge the Molde clash could therefore pose Celtic is when it comes to maintaining a lead or strong position.