Puzzled:

My heart is a puzzle
A puzzle in a box,
That's hardly been opened
Or given a shot.

I live within darkness
On some ole dirty shelf,
Once or twice been played with
Mostly left to myself.

All my pieces are there
But their all mixed about,
You'll see the bigger picture
If you figure me out.

You start on the outside
And you work your way in,
Until you fill in the middle
And connect all the ends.

So pay close attention
To each and every spot,
Cause all that you mend
Is all that you've got.

My heart is a puzzle
And I am nothing I'm not,
Just an unfinished soul
In a half wrinkled box.