Here is an interesting page here about secret sins that are difficult for me to discuss in a public setting, although I do remember reading the similar article on a similar or the same subject in Assemblies of God Sunday School literature that was sent to us free on the field. As we can see here, interestingly, these secret sins afflicted even missionaries in China more than 100 years ago:
Testimony of a Young Lady Missionary (c. 1900)
However, most people probably would rather not talk about these things publicly because the possibility of public shame and ridicule could be worse than the cure. I am like most people, preferring to discuss any personal matters with God personally and individually rather than in some collective and public argument.
