I think writing it out every time is a good way to say things if that helps you. Can she help you drop the comedy? This must be a well known defence and hopefully she has experience with helping people to stop using it to hide and avoid. People who have commented already are right, therapy is hard and overcoming our defences and the adjustments we have made thus far to stay (psychically or physically) alive is extremely risky. However, it isn't a job you need to do alone - she should be able to help. It will be really hard for you to know how to express yourself differently as you aren't used to it. Maybe finding a new way to express your pain will come as you explore that you aren't exaggerating and that you don't need to shock in order to be taken seriously. It seems less about whether she thinks you are exaggerating and more about whether that is what you think that about yourself.