This power so great

This pressure
One day so strong
The other fine
Flowing invisible
Like the air I breathe
Over my head as a mass

Sometimes I want to escape
From this feeling so strong
Working on my mind
Without a break
It's a power so great
You can't see
Not even touch

But sometimes
On the other days
It's nearly away
Let me think totally clear
For a while
Gives me the chance to write down
How much power it has
This untouchable energy
Which always pushes me to the best
I might could not achieve
Without this invisible mass
Flowing over my head
Like the air I breathe