There are a lot of benefits to being more observant. Observing people and putting your findings to use could help you land your next job, catch someone in a lie, get people on your side in an argument or win the romantic partner of your dreams. People are constantly (unwittingly) putting out telltale signals about who they are and what they want - you just have to know what to look for. If you want to learn how to make sense of people's body language, facial expressions and communication styles without letting on that you're watching, see Step 1 and beyond.