The absolute core of your life and being is your Heart. It's your hub and the center of your emotional and cognitive processes, and the seat of your decisions.
Think about it this way, you have a decision to make and you have thought about it extensively. You have done your homework, but you don't feel right about the decision you want to make, and it's all about your heart saying NO.
Its voice is a feeling, and sometimes it speaks louder than other times. This can confuse you because your homework may have shown you to go ahead, but that inner feeling says no.
Learn to listen to your heart because it won't let you down.