When I left Mormonism after thirty years, it didn’t take me long to realize that every single thing I knew in life was a lie.
Everything from food and clothing to the English language has to be re-evaluated by the person leaving the Church. Because they have lived in a state of fear of losing salvation and sometimes jobs, families and homes which can produce paranoia, sometimes there is a great amount of confusion in their minds. Threats, whether real or implied, have been the main meal of doctrine they’ve been fed. In this religion the meaning of words and information from the “outside” has been twisted by leaders of the Church in order to control the members. Being taught you will lose salvation by not belonging to their church is a threat and a scary process to have to endure.
The length of time and level of activity spent in the Church typically determines how long it’ll take to work through the exodus of Mormonism.