LG thats prety much what the book say it just outlines the steps and mentality thats needed. I dont know about you, but for me being bornin and raised a witness, I now find that certain social skills and etiquet (its late) where lacking. As a witness your constantly taught to be wary of worldly people, how satan is using them to get to you, and how they want you to be meserable like them. So if you can imagine this cult turns out a bunch of people who dont know how to properly interact with other's (read worldly people.)
For me that resulted to a young man who immersed himself into the scripture's (as translated by the WT$) and comic books. Needless to say that is not the greatest combination to base your life on (at least the WT$ teaching comics are fine.) Add on to that the fact that you have a bunch of conditional friendships in the BORG that just expands your wariness of people and can cause some to become more introverted.
I know for me I always would think 'I'm well read I can converse with someone on any given subject at legnth. What I did not understand (which this book and others helped me with) was the nuance of conversation. The need for banality in small talk. As a witness my conversation with others can best be described as a sledge hammer of facts, figures and beliefs backed up by the WT$ interpretation of things, there was no subtlety.