How come you're so lucky at cards yet so unlucky at the horses?I don't get to shuffle the horses

Luck is opportunity. Anyone who does not know how to make the most of his luck has no right to complain if it passes by him.
William McKinley (who was assassinated) often wore a trademark good luck charm. It was a red carnation worn on his lapel. While meeting with the public a 12 year old girl asked him for the flower. He gave it to her and moments later
Luck is a temporally tricky thing. One never can tell whether bad luck may not after all turn out to be good luck.
Ladybugs are thought to be lucky; the number of black spots either predicts years of good luck or the number of months until luck comes your way.
Luck is something we must believe in... for how else can we explain the success of those we don't like.
Luck is a fancy name for being always at one's duty, and so sure to be ready when good time comes.
If rabbits' feet are so lucky, then what happened to the rabbit?