Mistress, I agree. One long time domina I served for 6+ years, sadly retired, taught me that. She took me into a subspace so deep I asked Her a couple of times for a strap-on session. She declined saying, "You'll just get squirrelly on me," and She was probably right when I think about it now. Yet we did parts of sessions in public places, experienced GS twice and did a video with Her once. She expanded my horizons but knew what my limits were.