...On a stage where the actors struggle, unaware they were cast before their first breath.

That's very true. I'm a firm believer in the fact that Powers higher than ourselves control our actions. We are actors on the stage that is the world and these Powers have pre-planned how our lives would go even before we were born. It's a gloomy realisation, yet we must try to always stay in control of our lives as best as we can. Thanks for this fine poem.