I believed that only a handful of women were capable of vaginal orgasm, and that the majority were just not able to do it. Now I know that it's indeed possible for most women, and that every woman has her own requirements for making it happen. What works for one may not work for another!
I also believed that I should feel guilty for having orgasms. Not because that kind of thing was looked down upon in my family, thank goodness, but it was just some little nagging doubt in my head that didn't go away until I was fourteen or so. No idea why I felt that way.
I still went ahead and masturbated, but I would feel bad for doing so when I was done. I think it was partly because I didn't fully understand just what
I was doing at the time.