Persona_ (plural personae or personas), in the word’s everyday usage, is a social role or a character played by an actor. The word is derived from Latin, where it originally referred to a theatrical mask.
We all wear masks, its a natural occurrence in human society. A social adaption that allows us to survive the social element of human living. How we act and what where feeling are often two very different things. As an individual becomes more mentally unhealthy, the masks grow more extreme or break down to nothing.The individual that breaks down and lets all his emotions out is no longer able to function normally, we cry, we strike out in anger, we become nothing but emotion which can be harder to understand then hidden feelings.
Then there’s the unhealthy mask, we nod we smile, we keep a straight face, but under it all where screaming. This is a mask that we create to protect our emotions that we considered shameful, petty, or a number of other things we convinced ourselves was wrong.
All of this can be done both subconsciously and consciously. Another symptom of a mind gone rouge. Its hard, i wont lie, but hiding will only hinder communication and progress, and raw emotion can be just has bad. You need to learn control, learn to let feelings out and shape them into words and feelings that communicate with the world around you.