Sadhguru
Why is living with a lie so tiring?
A lie needs constant upkeep
If something is true, you can even forget it and it is still there, but a lie has to be kept up. Your being, your existence, is the truth and you don't have to keep it up.
But if it's a lie, you have to keep it up. Your personality is a lie; your being, your existence, is the truth. You don't have to keep this up.