7. You've Learned That Not All 'High Importance Emails' Are Of High Importance
All of your colleagues think that they are the most important person in the office and that their work takes priority. Unfortunately, they need to get in line and no matter how many times someone cries "high importance" it doesn't mean that you're going to drop what you're doing to help them look for their cuff link... If they've cut their finger off in the shredder then yes, that is an acceptable example of high importance. And yes, with their bloody stump of a finger they would email you the situation in the hope that you'll read it asap to call the emergency services for them. If you've learned anything about being in this job role, it's that everyone wants to be mothered.
