Have you ever been let down by a colleague who you thought was a friend? Or how about getting drunk at the office party? If so, you’re not alone.

But here’s the thing: You can’t mix your professional and personal life. And that’s not a great thing to hear, right? We all desperately want to have a great time at work. And I get it.

You spend more time at work than any other place in your life, so it’s important to enjoy what you do. But doing what you love and workplace rules are two different things.

That took me a long time to understand. Granted, I’m a stubborn idiot who has to learn things the hard way. But one thing I’ve learned about the workplace is this: Things are not what they seem.