Emotional processing is absolutely fundamental.
Let me qualify that statement: I learned at a very young age that certain feelings were not okay to express, to take ownership of or maybe even to have - and that if I did express them, I would be either rejected or punished because of it.
So I developed a lot of unhealthy ways of hiding and contorting my feelings. I became a master repressor - automatically burying my feelings before I even fully recognized them consciously.