Do you remember the movie 'The Holiday' where the old guy tells Kate Winslet that she should be the heroine of her own life? And I think he meant living authentically and recognising what you want.
Not at all the same as the MLCer grabbing what they want in an effort to be happy.
Nor is saying what we want an excuse to be rude to others. But being authentically yourself can be hard to do, while being a reasonable human being who also gets along with other people!
Perhaps part of living authentically is who we hang out with. This has changed quite a bit for me. I am much closer to some friends and others I hardly ever see or hear from.
MLCers cannot admit they have made mistakes. It is part of the script, so they twist facts and history and even their feelings to fit their script [they are often very inconsistent, but that is another matter!]
Being able to make mistakes and pick yourself up and learn from them is part, I believe of an authentic life. Pretending all is well when it obviously isn't, is totally pointless, and harms no one but that person. eventually. As Snodderly says, reality has a habit of catching up with people.