I've had a few experiences which makes me believe in fortune telling.
Both in our early twenties, a colleague, Christine, and I went to a fortune teller. We sat in on each other's readings.
The first thing she said to Chris was "oh dear, things aren't going at all well with your marriage, are they?" (Spot on).
To me, she said "if your husband doesn't see about his bad back, I can see him in bed for a very long time". My husband, who was about 26 at the time, had been to the doctor and an osteopath numerous times about his aching back with no success and had almost given up hope. After telling him what the fortune teller said, he saw a chiropracteur, had a course of treatment and other than a couple of top ups sessions over his lifetime, his back had been fine.
I also bought lace from a gypsy at my front door (more or less agreed to buy it to get rid of her). She was advising me to sew it on the bottom of my little girl's dress (At the time, I had no intention whatsoever of having children). Just as I was thinking I'd give it to my mother, she said 'Don't give this lace away, you'll give away your luck'. I kept the lace and I did have a little girl. I made her a dress and sewed the lace around the bottom with an inch or two to spare.