This is a post i saw somewhere... 

Somebody asked me: "You're a Doctor? How
much do you make?" I replied: "HOW MUCH
DO I MAKE?" ... I can make holding your hand
seem like the most important thing in the world
when you're scared... I can make your child
breathe when they stop... I can help your father
survive a heart attack... I can make myself get
up at 4AM to make sure your mother has the
medicine she needs to live...and I will work
straight through until 4am to keep her alive
and start the day all over again! I work all day
to save the lives of strangers... I will drop
everything and run a code blue for hours trying
to keep you alive!!! I make my family wait for
dinner until I know your family member is
taken care of... I make myself skip lunch so
that I can make sure that everything I did for
your wife today was correct... I work weekends
and holidays and all through the night because
people don't just get sick Monday though
Saturday and during normal working hours.
Today, I might save your life. How much do I
make? All I know is, I make a difference.