A little loose

I thought it would last,
That's why I kept looking back at the past,
It was the sweetest mistake,
Yet here I stand, walking alone by the lake,

I don't need you to understand,
You never did,
It feels like I'm trapped alone in an island,
Like a star which is now an asteroid,

Falling and falling,
Seems like it's never stopping,
I sit here, waiting for a sign,
Like a self-destruct campaign,

Which I'm trying to deactivate,
I hope you won't be late,
Cause I'm not sure how long I can hold,
I don't know what you were told,
But I'm only a shadow of my former self,
Like a broken clock on top of a dusty shelf.

God, I could use a little help.