Few people are so rigidly controlled that they don't give clues as to what they're thinking or feeling. Learning to read these can be a big advantage in business and life.

There's no single, consistent recipe — and even the best mind readers on the planet are only right 80 percent of the time — but there's a lot to be learned.

According to UCLA professor Albert Mehrabian, 55 percent of what you convey comes from body language, 38 percent from the tone of your voice, and only 7 percent from what you actually say.

We've compiled tips from Psychology Today and elsewhere that will help you stay one step ahead of everyone else.