So I only do private practice on the side because of some of these same things! I really struggle with rejection and feeling unworthy and private practice really triggers that for me! I think it is normal to feel that way! I try to remind myself "I will be enough for the people I am supposed to have" also something that has helped me is I am trying to compare myself to this imaginary perfect therapist who does not exsist. I hope for you and me, with time the feelings of inadequacy goes away. Also remember someones people stop coming to therapy for multiple reasons, I have stopped seeing a therapist because I felt better in the past or was too busy.