I can relate to your situation, suzuki2011. I worked with a therapist about 15 years ago to help me deal with some traumatic memories and emotional issues. I wanted to tell her about my age regression and diaper-wearing, since it was something I felt I needed to talk about, but was unsure how open-minded she would be about it. I decided to ask some questions over the course of a few sessions to test her open-mindedness. In my first session, I mentioned that one of the ways I sometimes cope is by doing things that were comforting to me as a child - such as watching cartoons or coloring (no mention of diapers or ageplay). I asked her if she thought that was healthy, and she said "Absolutely", which was encouraging. Over the next few weeks, I would tell her about something childlike and comforting I had done over the past week - like reading a children's book - and gauge her reaction. It was always positive. After maybe five sessions, I asked her if she knew anything about infantilism. She smiled warmly and said "Yes, I've had a couple of clients who were part of that lifestyle." That was when I felt completely safe telling her my whole story.