I believe that there are degrees of Happiness...
Some days I'm perpetually happy... On those days, it doesn't matter what happens! I'm in such a good, happy state of mind that nothing can get me down... I'm a very cheery person.
On other days I'm hyper happy. When these days occur, I tend to be really silly and get excited really easily. On these days I tend to be very dramatic.
A lot of the time however, I'm content happy. When I'm content happy I'm a fairly mellow person with a happy undertone. I don't get ruffled easily.
Yesterday I was perpetually happy. Today I am a content happy.