The midfielder admits demands are tough at Celtic.
It might sound cliched that a football team wants to win every game but, at Celtic, that sentiment certainly applies.
At other clubs, especially further down a league table, the pressure after an occasional defeat is significantly reduced.
But, for Ronny Deila's men, results like their 0-0 draw with Ross County or 2-1 defeat at Dundee United earlier in the season are usually met with widespread criticism. And that has provided a big learning curve for Johansen.
“You learn a lot about Scottish football when you come here and at a club like Celtic you learn about the winning culture. A draw or a loss is not good enough and that’s how it should be," he said.
“That’s what football is all about. You need to be much stronger mentally because every game is a big game and that helps you grow up."
Meanwhile, Celtic forward Anthony Stokes has emphasised a similar theme, suggesting the Bhoys' winning drive every match is something he loves about the club.
“That’s one of the things I’ve always loved since I came to the club. There’s always an emphasis to win every game," Stokes told the Celtic View.
“Even league games – you can go five or six games winning and then you lose one game and the fans are disappointed but that keeps you on your toes, working hard and striving to win every game you’re involved in."
Both Stokes and Johansen were speaking ahead of Sunday's Scottish League Cup semi-final with Rangers, which kicks off a big month for Celtic.
The Scottish champions currently sit top of the league table and can extend that lead in February, while Rangers present their first tough knockout test, before they face Inter Milan in the last 32 of the Europa League.