And the Breakers are confident his attitude will translate to on-court success in his role running the offence and leading the defence from the front.
"I spoke with his college coach [Rick Byrd] in the interview process," Vickerman said. "The first thing he said was, 'In my 25 years of coaching at this university, [Johnson's] one of the three most competitive guys I've ever met.'
"We've got a guy who's going to help us win and he's been outstanding so far. He's going to have his adjustments but we've already seen him adjust pretty well to the league."
Johnson's quick learning has been unable to prevent the Breakers from starting the pre-season winless, but he has seen steady improvements in his side and he expects those to continue in the three-game set against Chinese side Dongguan, which began in New Plymouth last night.
"The first game was a little different but, as they've gone on, I think we've all gotten better," he said. "It's about progress for us - every two weeks you want to be better than you were before."
And, as the fortnights tick by, Johnson is sure to grow even more comfortable with his new life.
"There are times when you do get homesick, but then you just remember what you're over here for. Not a lot of people get this opportunity, not a lot of kids get this dream."