Ghosts from the past

I'm surrounded by many
Ghosts from my past
From the people in my life
That did not last

I wish to move on
To be rid of these ghosts
But rather than distancing
They keep getting close

At times they'll seem
As distant as can be
Only to return much
Closer to haunt me

I'm stuck with a past
That I long to change
But I know a past
Can never be rearranged

I'm stuck with a lifetime
Of thoughts that I long to forget
Memories so burdensome 
They make a great life hard to live

Life three years ago
Is so different from now
It leaves me baffled
Asking myself "how?"

Everything in my life
Changed too fast
These changes weren't bad
But I still have this past

The past that I never
Quite got through
From decisions that I know
Are impossible to undo