You know when something just feels a certain way? Like if you walk into a room and meet someone that just has a good energy about them? And when you leave that night you say to yourself, "I really like him/her". Well that's when you know. I think that if we were to just stop thinking so much or saying too much and felt what was going on around us, we would get a better sense of life and which direction to take.
Take a minute. Close your eyes, and just feel.