A logical fallacy

Suppose that for years on your way to and from work you pass by a house that has a black door. For years you pay it little notice, but one day you stop to look at it. You say to yourself, "Hey, that door is black." You stare at it some more and say aloud, "Hey, that door is black." You continue to stare and repeat "Hey, that door is black! Hey, the door is black!, OHMYGOD THE DOOR IS BLACK!" over and over until you are miserable. Now, is the black door the "cause" of your misery? Or is it rather how you feel about it?