
Great book on the topic: https://www.amazon.com/Alter-Ego-Effect-Identities-Transform...
This helped so many different people such as accountants, pre-k teachers, stay-at-home moms, and even university professors get out of their shells, prevent their stage fright, and to be more energetic on-stage when their normal persona is calm, cool, and collected.
I do believe we also have an alter ego in three different situations such as work, home, and play. Another common thing I would teach is that you can alter your characters in scenes easily by adopting one of those personas of the character you're portraying.
I believe many people adopt an alter ego without knowing it today. These are YouTubers, Streamers, Conference Speakers, and really anything where there's a concept of a "stage".
The book "The Alter Ego Effect" by Todd Herman goes into this further, but my favorite material on this is "Impro" by Keith Johnstone.
There's something about the overall principle, worth investigating on an individual basis.
He goes into great detail about the method and the science of what’s happening in your brain when you use it.
It’s helped me go from introverted engineer to successful start-up founder that just exited.
