So it's kind of like going through social interactions with an itch that you're constantly aware of but can't scratch. Or perhaps for a neurotypical person, imagine that you're instead not allowed to make any facial expressions or change in your tone of voice and you have to constantly monitor yourself to make sure you're not doing what is, to you, a normal and unconscious reaction. Of course everyone has to modulate their tone of voice and expression to some degree, but with autistics the gap between how they'd behave 'naturally' and 'what is considered socially acceptable' can be a much bigger one to bridge.
Or you might not want to say hello or goodbye in the normal situations they are used. Or small talk. These are all things many neurotypical enjoy.