a forced smile.

i work as a receptionist for a software company in salt lake city.
the office is incredibly posh and modern and beautiful. the workers are mainly engineers, and well, very much the engineer type. (they are sweethearts but terribly awkward.)
i answer phones, have guests sign nda agreements, greet everyone on their way in and out, and pretty much cruise the internet/read in my free time.
it's a pretty cushy gig, and that pay's not bad either. (for a college student.)
i've had a few friends mention that they could never be a recpetionist, because we are expected to be cheerful and chipper all of the time. and they are right.
as the first face everyone sees every morning, and the first voice every one hears on the phone, it's my job to be cheerful and sweet and patient. and it's not always easy.
but it is so great.
if i woke up late and spilled on myself and am stressed out, i don't have the option of brooding behind a desk all day, my mood marinating.
fake it 'till you make it? that's real stuff, and 9 times out of ten, by 8:15 i have turned my bad mood around--by the simple act of smiling and chirping 'good morning' 5 or 6 times.
i wonder if this attitude can translate. if we expected outselves to be happy and cheerful, how often could we pull ourselves out of our bad moods + slumps + morning grumps? how much of our bad moods/bad days are just ourselves reacting poorly to circumstance? 
and if we can pull ourselves up and bring light into our own lives, how often could that light do good for someone else?