The Mandela Effect is a collective misremembering of a fact or event. Various theories have been proposed to explain what causes it, some more sensible than others or is it?
To my beloved self: treat yourself to the highest standards. Respect yourself and how you define your own respect. Treat yourself with knowledge because ignorance will be taken advantage of. Always remember that the ego you carry on your shoulders at times isn't because you lack your self-worth or confidence, it's merely the balance which you use to reflect on. When you know yourself truly, it is when you stop finding validations in others.