Know about precognition? How can I identify what it is telling me, when other feelings cloud my judgement?

I think we are all missing the way that coincidence registers in the mind. People are constantly thinking random thoughts all day long. If the gentleman did not slip, he would not be talking days later about the time that he thought something bad wad going to happen yet everything turned out fine. I may think of my mother briefly 10 times a day (we are not exraordinarly close, but if you think about it, many of us think about out parents all the time) lets say once every two months she calls at the exact time that I am thinking about her. My reaction is usually " wow mom, i was just thinking about you, you must have felt it and called me" without realizing that the last 599 times I thought of her she did not call. this is also hoe psychic like john edward operate, they know that they can miss 99 times out of 100, because their hit will always make the readee forget the misses