The ‘authentic self’ - what is it, and does it help to try to find the elusive ‘real me’?

The concept of ‘authenticity’ shows up just about everywhere. We might debate and denigrate the lack of real, raw and unfiltered versions of people showing up on social media platforms. We might see wall art and online posts (which may or may not be AI generated) encouraging us to just be ourselves. But what does being ‘ourselves’ mean, really?