Its possible its just an age thing. Many years ago I used be that way measuring stuff for cooking, reciepe says 1/2 cup then by god its gonna be a 1/2 cup no matter how long it takes. As I got older I realized a smidge over or under didnt matter, and even older now, I dont even use measure cups much anymore. I'm that way about my MP3 files also, Artist then song name, but I also have my music filed by genre and decade, Jazz 30-40s, Rock 60s, Rock 70s, and so on.
I also had the same issue with letter writting, I started letters and then never finished them because I would re-write an entire letter if I mispelled a word or thought of something else to write but though it should have been earlier in the letter. I eventually cured myself of this problem by not writting any letters at all...
I consider myself LOCD (Lazy Obsessive Compulsive) I want things to be orderly but I'm too lazy to do anything about it, so I suffer with my disability in silence and have another beer.