Emphasise that you have been in a high control cult and not just a religion otherwise they might think this is about loss of faith. Explain that every aspect of your life was controlled from what you wear, how you have your hair, where you can work, to medical treatment, to how you raise your kids, to holidays, to education and even your sex life.
That your obedience was policed and even reproved under threat of disfellowshipping. That you were not allowed to deviate from the doctrine one iota and a casual conversation with a fellow believer about a single doubt could land you in front of a JC. Hope that helps.