Why get rid of it? Enjoy! )) A joke.
To understand what needs are behind it, to learn how to satisfy them in a more acceptable way for an adult, without interfering with others and not destroying oneself.
So - to a psychoanalyst and work, work ...
Commit at another stage. Joke. All stages used by Freud and developed into fixations are conventionally synonymous. Being in the anal stage, we did not enjoy our poop, although we received the simplest pleasures - food, need, communication. The oral stage is the very first in development, associated with feeding, and in fact, associated with a sense of trust and calmness. With breast milk, the baby also receives hormones that have a sedative effect on the baby, so they become limp, calm and half asleep. These hormones are inextricably linked to feelings of calm and security in an adult. Trying to calm down - we appeal to the simulation of our oral cavity, however, we do not receive those same maternal hormones. After all, what are we doing? We smoke, gnaw hands, eat, lick our nails ... So, advice - you need to calm down, look for other ways to feel calm. They say that physical activity helps many with this, for example, walking, squats.