when you leave so many wip files (textures models esps etc) on your desktop that you have to "clean" it monthly
Monthly? How about weekly!
...when caught player another game, you're often thinking how to implement elements of them into oblivion.
...when you wonder when a CS will be released to be used on your mobile.
...when your monthly quota of CS-use is reached. (:P)
...when your play/mod time ratio is 1/7 or higher.
...when creating a mod, at a moment being determined its finished. Then after 10 minutes finding a way to realize you've just started.
...when you realize you've got 5 backups of all your mods.
...when you realize you've got more unfinished mods in you load list than finished ones.
...when you upload a mod you already had the other day.
...when you start to criticize on a team-member about a certain section of the mod, while you're the one that created it.
...when you accept requests and finish those before the ones that you were working on already. While they would've taken half the time.
...when you read this thread and recognize more than 50% of the symptoms.