Today is Friday the 13th. On my way in this morning the radio station I was listening to was talking about Friday the 13th, and all the myths & legends around it. One of the points they made about this day, was one I make about life in general every day.
You will find exactly what you are looking for.
In other words, if you wake up on Friday the 13th paralyzed by fear, expecting the worst to happen, waiting all day for bad things to take place - the chances are that you will look for bad things all day, just to prove to yourself that you were right.