The person behind me

How should I feel
When no one sees the sadness behind my smile
They all lean on me as if I were steel
Even though I should have been broken for awhile
My supports are long gone
Im still standing only thanks to luck
Im weak as a baby fawn
Though Im used like a truck
Im ready to collapse
Into the darkness, I'd go
Until I can again grasp
A way out of this all time low
Which I dont forsee
Anytime soon so I just lay
Waiting for that maybe
That will bring me back your way