I highly recommend going to therapy. Granted, every therapist is different and every experience is different, but I found it helped me understand myself and my behavior better.
Talking about crossdressing was a key reason for going in the first place, but once I started digging into my life history with a professional (especially around childhood, when most of us first experience crossdressing), I discovered unexpected connections and revelations that helped put dressing in a greater context in my own life. In general, it helped me understand myself better as a whole and was not just focused specifically on dressing. Hope that makes some sense!