I am depression – from me you cannot run

The faster that you walk away,
The faster I will chase,
You ought to understand by now
That just a change of pace
Is not enough to shake me off,
I’m living in your head,
Chucking out your good emotions,
Installing bad ones there instead.
You think if you ignore me
Then perhaps I’ll go away,
But you’re simply saving problems
To be fought another day.
I’m an evil little ball of hate,
And though you wish I would take flight,
There’s no way you’ll get me out of here
Unless you stand and fight.