Fantastic, I was just about to write the same and checked out your comment.
I get mad at times and break wrist-watches, spectacles etc., And, as a rule, every time, the madness is due to "expectations". When I don't have anyone around, whom I love a lot, for a prolonged period, these incidents never happen. I expect something from my beloved people and I get mad, when I don't get something :-)
So, letting the expectations down(on the beloved, or on a stranger on a road about how to behave) should really help.