If you want to spoil any good mood you might be in: Compare yourself to other people!!
Look around. See who has more money than you. Who has a more attractive wife than you. Who has better behaved children. Who doesn't suffer from physical ailments that afflict you. Who is smarter and more personable. Who seems happier.
It is MAGIC. Your good mood will evaporate in thin air!!!馃槀馃槀
