Bruising Me, Yet I've Abused

What Have I Done?

Wondering what I'm doing here
So distant, far away
Wondering what they're doing there
A moment of their day
A fragment of their lifetime
A piece stolen from my lifeline
Is this what I have done?

Snap out of it: It's not your fault
Slapped out of it: A sudden halt
Map it out: A big mistake
I've gone without: Bent out of shape
Losing it: Nothing left
Leaving it: Steps so deft
Forgetting you: Not so bad
Not letting you: For that I'm glad
Facing fears: Scared as hell
Laced with tears: No warning bell
Want to hide: Impossible
Spirits dead: it's causable
Losing me: So confused
Bruising me: Yet I've abused
No clear lines... Have I been used?