I'm overcome with sadness

It's not the biting sadness
  The choked sobs
that are brought about
by the jolt of a sudden death
or the fresh sting of
a broken relationship

It's not the aching sadness
  The somber introspection
of missed opportunities,
of wasted days
of long lost loves

It's not the oppressive sadness
that depression brings,
wrapping around your head
in suffocating silence
that leaves you numb to the world
that makes you believe that happiness was
only a fairy tale

Rather...

It's the warm sadness
as the tinges of autumn begin to show
and you realize that the summer
was never meant to last forever

It's a familiar sadness as you realize
that everyone changes
and the person you once were
no longer exists, for better or worse

It's the sadness that nostalgia
tows along with fond memories
of summer vacations
of drunken antics
of foolish lust
of fading friendships

The sadness that tells you that
"Things will never be this way again"

But also reminds you that they were never supposed to be

   and that's perfectly alright