What am I?

I am a bad decision,
A couple of broken bones,
That take too long to heal.
I am a bridge from my city,
Sturdy at first,
But slowly caving in,
I am a man that's rusted steel.
I am a facade,
False emotions plastered on me.
I am all over the place,
Yet to you, completely intact.
I am trying so very hard,
But my stigma says I'm slacking,
I am a play being written,
Still my life is all an act.
I am zen on the inside,
Yet a riot on the out.
Happiness is the key to life,
Someone still locked the door.
So you're asking me,
What am I?
To tell you the truth,
I'm not even sure.