Intuition is your sixth sense. Unlike your other senses, you probably didn't get much training in intuition, unless one or both of your parents had as well. If you'd been trained in it at the same time you learned about your sense of hearing, taste, smell, and sight, you'd be much more comfortable with trusting it today.
If a plate of food were set in front of you that looked and smelled like manure, you'd likely not take a taste. You trust that if it smells bad, it will taste bad. However, if you get a "gut feeling" that something is a bad deal but with no other clues, you may not trust that feeling. You may then try to ignore your sense of intuition and go forward anyway, only to later realize that your gut feeling was right. Not trusting your sense of intuition is like eating the manure, yet many of us do it every single day...er...not trust our intuition, that is.
When a group of people sit in the woods, if there is a sound of a cricket, frog, then coyote, and one person exclaims, "cricket, frog, coyote," the rest of the group does not look shocked, clap, and cheer. This is because everyone heard the same sounds and drew the same conclusions (except for the guy who was wearing headphones, listening to rock music). Yet when a psychic, one highly trained in intuition, picks up information and relays it to someone, they are in awe...sometimes moved to tears, sometimes shelling out lots of money to hear more.
We ALL have intuition. Some of us have better hearing than others, some can see better, some can smell a hotdog a mile away. Some people have a naturally very strong sense of intuition, and some do not. But even the ones who do not but who train themselves to improve their sense of intuition will be better off than the natural ones who do no training at all. It's just like someone who has great vision. If he or she does not use that to read, but the lady with the glasses reads daily, she will know a lot more than he about whatever it was she was reading.