Mind reading as a language pattern is saying that you know the thoughts or feelings of another person without letting revealing how you know. Of course it is an educated guess on your part so it relies on your careful observation of their behavior so that your statement is correct.
If it is correct, then they then have to wonder how you knew. This increases your credibility and gives you a window in which to make an immediate follow-on suggestion.
If you are wrong then you risk losing rapport. The secret lies in being vague enough that they can always attach a significant meaning to your words, much like a carefully worded horoscope in the popular newspapers.
Example: "You may be aware of a certain sensation inside that allows you to relax even more."