Everyday metaphor

My mind strains
Like the hour glass grains
Congested like a yard full of trains
But I'm to blame for my own pain
Underneath my skull is a tortured rain that drives me insane
These thoughts are so developmental its hard to be a plain Jane
I wish you could all see what I'm trying to say
The only links we have are within lifes chain
We all take the same path like blood through a vein
Its another "everyday metaphor" I try to explain