From fears I creep
and so I begin
a world of horrors from within

A looming monster
a glaring eye
As all your hope waves goodbye.

Runners can't outrun me
or even keep my pace
Nor can a doctor cure me
He too may cower at my face

Sometimes I can take a different tune
Of what transpired last afternoon.
A mistrust you misplaced,
told yourself was out of place.

Or I can play with your desire
Set your heart aglow, afire
Find yourself in someone's arms
Or in a place of calming charm

You may find granted a long time wish
but be forewarned it will vanish
When I take my leave, it will too
and you'll be left with what is true

Even if you can tame me
I will never stay
No matter how tight the reins
I will run away

Before I see you next I ask
that you sit down and take this task
Answer my riddle, and my answer spy
To put it simply "who am I?"