Like astrology there are many forms of fortune telling including crystal balls, tarot cards, the reading of palms etc. It is true that some of the people involved will not have any supernatural power and will be “faking” seeing your future. There can still be problems with this because you might put yourself under superstition and not be free to live as you should.
Other people involved will have some form of supernatural power. Where does that power come from? Evangelical Christians believe that God clearly shows on a number of occasions that fortune telling does not come from His source and so that only leaves one other source. Do take this warning seriously and always check things out.