My Way or the Highway
This person describes their intense need to do certain things a certain way. They have their own way of folding clothes, setting up a file system, and doing other things in their everyday life. Sure, everyone has their own way of doing things, but this person HAS to do them a certain way to the point that the behavior is obsessive.

This type of obsessive behavior may seem like OCD, but it can also be a symptom of ADHD. Compulsive behavior can be part of ADHD. In addition, ADHD and OCD can be comorbid disorders, or two disorders that occur simultaneously in the same person. Compulsive behaviors and habits are manageable for most people. Just remember that it’s their way or the highway!