Your day starts badly. Late bus, and then three come together all at once. The half empty ones sail by, leaving you to get on the one that's almost full. Standing for what feels like ages, while the bus driver vaccilates between gunning the accelerator and riding the brake. Two women try to get off but the ignorant city suit guy standing in the aisle on his mobile phone is slow to react, meaning that they miss their stop. Then he has the gall to complain loudly to the person on the other end of the phone "Sorry, someone was just trying to push past.", and you can't help but get annoyed on their behalf. He sits, then you take the empty seat next to him. He digs into his bag, opens a folder that ends up sitting on your lap almost as much as his. Then someone behind you reaches for the bell, misses and smacks you upside the head. A perfunctory apology is all you get, while his female friend sniggers....
And so on.
Then you sit down at your desk and you get an unexpected and pleasant email, with a lovely compliment in it and... like a bubble bursting ::pouf:: the bad mood is gone!
So, here's a suggestion. Take a minute and send someone a heartfelt compliment either in an email, SMS or tell them in person. Make someone's day. It feels really good.