It worked, I'm biting.
Any changes to even a lightly complex event requires me to immediately play test those changes, even if I know 100% for sure there are going to be no problems because the change was so insignificant (sometimes as small as just fixing a typo in some dialogue) I still, no matter what, must play test.
I always click "Apply" and then "Okay" (reference my memes posted in the RPG Maker meme thread). I've tried to break the habit, but I still find myself clicking "Apply" and then "Okay" and if I ever do click "Okay" I second guess myself that I clicked cancel and immediately open the event/database to make sure I clicked "Okay" and not "Cancel"...and then immediately proceed to click "Apply" and then "Okay".
Organization of all of my game entities: variables/switches/database objects/events. And this one kills me the most, because RPG Maker is the absolute worst tool for workflow organization. So I try to plan ahead "Oh I probably will need 20 switches for this area" so I set aside 21 switches, with the first one labeling this section of my switches as "Switches for This Level"...and then 2 weeks into development I realize 20 wasn't enough but guess what, switches 22 - 43 have already been claimed by another level. God if this app just allowed for folders or drag-and-dropping items around the database I would be a much happier camper.
Closing RPG Maker as soon as I am done with any work so that I can ensure Steam's Usage Time tracker is as accurate as possible. This often creates funny behavior that makes me wonder what my Steam friends are seeing since often times I will reach a stopping point in my development, close the app, then maybe a few minutes later I think of something I need to adjust or change or something I forgot to do, causing me to open the app again, play test the change (see above), then close the app. Then sometimes I think of something else and repeat the process again. There have been times I've gone through this loop 3 or 4 times before finally closing the app for good for the day.
I feel like I should add this as well, and I feel like this borderlines legitimate OCD - but I'm no doctor, so we'll just call it "obsessing" but not "obsessive".
If I am not able to solve a problem, and it's late, and I'm closing RPG Maker for the night, then it will haunt me, for the rest of the night and I am guarenteed not to sleep for the night without heavily medicating myself with..."cough medicine"....NyQuil to be specific. Even though, that's more like forcing my eyes to shut, but it still feels like despite being "asleep", my brain is still firing on all 8 cylinders, so I wake up feeling groggy and miserable and the bug/problem/whatever is still right at the top of my mind.