Knowing these helps with self-talk. You trip over a curb and start scolding yourself. Then you can say to yourself "this is just spotlight bias", and move on with your day, avoiding the impact of negative emotions. Or, you might be more open to a change in restaurant plans because you know of the false consensus effect. There's subtle but real power in just naming things!
I tripped and fell spectacularly walking in a supermarket. I was annoyed that no one helped me up or checked if I was okay (I didn't need help but it made me think less of my fellow man) and that my partner was waiting in the car and didn't witness it, because it was actually really funny.
I left embarrassment in my 20s. Don't have the energy or interest in it now. And I know I'm not the main character - everyone's living their own lives, the impact you make on strangers is minimal. At worst someone said when they got home from the shops 'i saw this chick stack and it was kinda funny'.
Reminding yourself that no one really cares about people that don't know is a helpful way to shut down the negative self talk.