Reading people‘s minds isn‘t a spiritual exercise as many may think. It is actually done through OBSERVATION of the Pupil(Eyes) and Tone(Voice).
Most times in a dialogue all we listen to are WORDS. In order to read people its good to observe STRESS(rise and fall) in their voice in order to get an idea of the person is thinking. Reading minds goes a long way in preventing certain problems e.g relationships, businesses, home and the more you find. There are many methods but observation is the easiest. For instance, my mom has this “BE WARNED“ laughter she unleashes when we misbehaved and we don‘t need a prophet to tell us she warning us; we figure it out our selves. So also if you are discussing and your friend is looking up with his hands in his pockets and turning 60degrees both sides; you know is not interested in the topic. Dilating pupils means the person is thinking. Someone looking upwards a little is tired. Someone looking downwards is shy. Someone looking downwards with head turned a little showing you his ear is scared. Yarning during a conversation is lack of interest.
So depending the situation they may have different Readings........
Spending time with people also helps read them because you will know their reactions to certain issues. Posture also help reading...............