IMO this is more just that people are really bad at reading themselves. With someone else, you can see the body language and know that they're upset; but with y

IMO this is more just that people are really bad at reading themselves. With someone else, you can see the body language and know that they're upset; but with yourself it can be harder to observe body language and other clues. Most people walk around unaware of their mental state on a minute-by-minute basis. I'm one of them -- I didn't believe it until recently, but once I started unraveling the anxiety I'd been walking around with for years, it became obvious to me why most people thought I was just a grumpy jerk. Other people don't perceive you the way that you do; and in many cases they may have a better perspective.