[besasam]

There's a difference between being an introvert and having (clinical) social anxiety. It's an irrational fear and no amount of "realizing" will help with that. Cognitive behavioral therapy however will teach you to recognize thought patterns and channel them elsewhere, but that's something entirely different from "stopping giving a shit".

Source: extrovert with lots of anxiety who loves the public but still gets irrationally scared of it at times

[eclat]

Exposure therapy alongside CBT has been proven to eliminate social anxiety, which is what he is saying.