Hello iPhone: I'm sorry you have gotten into this habit. I obviously don't know the full extent of what you're doing. But I want to warn you that taken to extremes hitting one's head can, over time, cause some serious problems which might not occur to you until they happen. I'm not sure what to suggest as an alternative... perhaps beat up on a pillow or something. But while a few occasional punches to the head may not have any lasting effect, done too often over a period of time, they can do some significant damage. Please try to find some alternative way of expressing your hurt.