Clint Frazier has run the Yankees gauntlet and has come out the other side a better player for it.

“It’s been difficult,’’ Frazier revealed to The Post at Steinbrenner Field this week. “Because where I was at at 18 was a lot higher than I think I am at 25.

“Meaning, I felt I was a little bit ahead of the curve at the age of 18 and now I’m sitting here at the age of 25 kind of looking around like, this isn’t where I thought I’d be at this age according to how things were going when I was younger.’’

In other words, top of the class.

“I think I got tested in a lot of areas and maybe now I’m responding to those areas a little bit differently,’’ he said.

Because of Aaron Judge’s shoulder and chest pain, Frazier will be needed more than ever to start the season in the Yankees outfield. After Thursday’s 15-11 loss to the Tigers in Lakeland, Fla., Frazier is batting .308 this spring.

“It’s tough to make it [in the majors], but it is even more tough making it with a team full of players like we have, and so that was tough mentally to get past,’’ Frazier said. “It took a little bit to adjust."