13. Checking the “sent” folder in your inbox to make sure an important email went through
Doing this once is fine. After all, you wouldn’t want a technical error to stop an important message from being delivered, would you? But after the 28th time, you’ll probably start questioning your own sanity.
12. Going back to check the door is locked, despite knowing full well that it is
In the grand scheme of things, this is pretty understandable. You wouldn’t want to leave your door unlocked, after all. But when you know for sure that you’ve already locked it? Yeah, going back is just pointless. But we all do it…