We've all had this happen.  You show up to a store, ready to make a purchase that thrills you, and within moments of arrival, all of that great energy you had gets sucked right out of you.  What happened?  More than likely, you walked into an environment that had negativity and unhappiness hovering, and the associate(s) you encountered had bad energy spewing from their pores.  (We can likely assume that these associates are unhappy with their jobs and don't have the tools/training they need to do their jobs well so they feel good.)  This negativity wildfire nearly engrosses you, and that excitement you had about your purchase is depleted.  Think about all that could be done differently by the company/associates in this situation.  Now, take a look at a very funny (very bad!) customer service exchange that takes place during Meet the Parents when Greg Focker (Ben Stiller) is attempting to board a flight.

People who handle stress well tend to employ what stress experts call an "optimistic explanatory style." They don't beat themselves up when things don't work out in their favor.  So instead of using statements that catastrophize an incident, like "I'm a complete failure," they might say to themselves, "I need to work on my backhand."

-Shape.com, 20 Simple Stress Relief Techniques

Happiness in the workplace has a lot more to do with you than you may think, and less to do with the workplace itself. What makes you genuinely happy in your job surprisingly isn't about promotions or higher pay.  It's not the things that happen to us; instead, we all create our own personal experiences.  Srikumar Rao, the author of Happiness at Work states, "The knowledge that we are responsible for living the life we have is our most powerful tool."