Authenticity as a notion is a robust Western cultural more that I find confusing. The best parse I can get on it is this: developing an awareness and possibly a narrative around ways you behave with a subconscious expectation of social affirmation. Developing that awareness can certainly feel like a liberation of self-determination.

That can, also, undoubtedly be a powerful tool in overcoming cultural brainwashing of sorts, but I think the knife cuts both ways. The "authentic self" term makes it sound ontologically real and suggests that there is merit in searching for "finding oneself" when no ther motivating need exists. That road leads to pathological definition writing, IMHO.