PeeJay explained the concept of parts much better than I could. My T used to use the internal family systems model with me. She explained that we all have different parts of our personalities and the goal is for our Self to lead the parts in harmony. I loved the concept once I understood it. It was helpful for me to express what the part felt or needed. I liked when my T asked how SHE felt, and I liked talking in the 3rd person!

I suggest trying this method but you have the right to tell your T if you just can't do it. She's not going to force you to work in a way that is intolerable for you! Tell her what you feel and think about the parts concept and maybe she can reassure you, or use a different approach. I'm sorry it's upsetting you so much.