Doesn’t sound like a good gift.

I have no idea what you’re talking about. I resolve conflicts as they appear, personal or work related, they are a part of any relationship. Promotions - I am a dev, not sure what promotions would be relevant, and how that would be a problem. Job changes - many of my friends that I’ve made at work through the years changed jobs and we’re still friends - I don’t see a problem here either? And what dirt? How would they use it? If I told them I am tired lately, they would told the boss that I am slacking or something? And the boss would probably just think they are a weirdo to keep eye on? Maybe you work in a very toxic environment, I have never had any issues.

I made friends with people I work with.

You should wait about 30min after eating something acidic: https://www.cuimc.columbia.edu/news/brushing-immediately-after-meals-you-may-want-wait . Some people don’t have time to wait. Myself I don’t eat breakfast at home, I brush my teeth, go to work and eat when I arrive.