When Hellebuyck played for Odessa, he and Joe Clark, his goalie coach and general manager, used to go over his play after every game, sorting out "the good, the bad and the ugly.
"I wanted to get it off my brain so that I didn't waste brainpower or stress on it again," he said.
He also said he adopted a changed view of goaltending.
"When I was in high school, I used to think it was about getting to a spot, into perfect position, then the puck will hit you," he said. "Now I realize there's a lot of hands that come into it and that position gives you the best chance for your hands."
And big-picture thoughts changed, too.
"I told myself in high school I'd do whatever it took to make it," Hellebuyck said. "And when I got to college and late in juniors, I changed my mindset, not just to make it but to be the best and to prove why I'm the best. You're never just the best, you have to continually prove it and improve it."
Hellebuyck's progress in many of these areas was dramatic last season, when he finished second to Pekka Rinne of the Nashville Predators in the Vezina voting as the top goalie in the NHL. Hellebuyck (6-foot-4, 207 pounds), was 44-11-9 with a 2.36 goals-against average and .924 save percentage in 64 starts, tying Andrei Vasilevskiy of the Tampa Bay Lightning for most wins while setting an NHL single-season record for wins by a United States-born goalie.
He helped the Jets finish with 114 points and reach the Western Conference Final, where they were defeated in five games by the Vegas Golden Knights.
Now he has a clear picture of the next step, that his own details, process and confidence will be keys to a better outcome than last season.
"I would not be happy with myself if I didn't achieve the same outcome, or at least give myself a chance to," said Hellebuyck, who is 2-1-0 with a 2.33 GAA and .926 save percentage this season. "This team is going to be good for a while, I truly believe that. We have great character in the room, great leadership. The playoff run was so awesome (for) the city and so awesome in the locker room. I can't see myself enjoying anything less than that."