I don't mean to be a pessimist but i tried this for years and it doesn't work, at least not for me . At the end of the day, humans can only take so much pain and disappointment and sad reality is we are social creatures and need other people.

Perhaps those who have been free from the exposure of narcissists and the cruelty of the world can get away with this, but those who are constantly exposed to the brutality or have no choice but to live with narcissists psychopaths sociopaths or just in very difficult circumstances, it doesn't really work

This is why people are advised to go to therapy because their own way of trying to heal themselves doesn't work. Many are doing it for a lifetime because some trauma is too much to unwire.

Even when I try this on myself if I have to go home and I am completely alone, or if I have to live with someone who is constantly telling me I'm a worthless pos, it doesn't really work. It can grant me temporary solace but not permanent.