Something I wanted to say, because a few people are talking about being worried about what other people must think of them based on the stories that their parents are telling.
When I was younger, I used to worry constantly about what other people thought of me. My father's fixation on my 'flaws' made me fixate on them too. I was terrified that other people saw what he saw. It left me with awful social anxiety, selective mutism, and panic attacks. Didn't have a boyfriend until I was in my 20's because I'd had it drummed into me that I was too ugly, and I believed it. I could barely go in a shop without bursting into tears. It was horrendous.
But out in the real world, no-one was judging me. They were barely even noticing me. They were all too busy with their own shit. He put in my head the idea that the whole world found me disgusting. I had an overinflated sense of my own importance, which I know sounds back to front, but that's really what was going on. I assumed I was important enough for other people to be making mental space for me and waste energy talking about me when I wasn't there. Dealing with a narcissist can turn you inwards until all you can think about is yourself.
Basically, we think other people are thinking and talking about us far more than they actually are.