Open my heart?

Ever since I left him 2 years ago, I lost my soul.
I still cannot stop blaming myself for making the stupist decision ever in my life.
I also don't know how I can manage to survive for 2 years without my soul.

My friends told me to open my heart for other relationships.
I wish I could.
But how can I open a heart that is already broken, that is already dead?

How long can I survive without my soul and heart?
I don't know, I don't want to guess.
I'm just trying my best.