Inexplicably and Inevitably True

Why is it nearly always true that when you decide that you are done with something, ready to give up and blow it off, ignore it forever, that things always ALWAYS turn around right at that moment? When you are looking for a job, you have a hard time finding one, and then when you do, suddenly you get offers on others. When you are looking for a car, same thing happens, you purchase one and then suddenly, you find something better. When you have decided to erase someone from your phone book, they suddenly contact you multiple times in one day -- entirely unbidden. What the hell? Not that I mind so much on the last one, but still, what the hell?