Every black thought
Made with malice
Joins a river in my mind.
The river swells
And swallows its banks,
Drowning the shores.
I spent so long
Walking alongside it
Trying to swim across
That it took me eight years
To even consider
Building a bridge.

There are supposed to be 4 stanzas of 3 non-rhyming lines lol

I like it! The non rhyming has never really been my style choice, but it carries well with how you did it. Vivid imagery, and a really cool surreal setting. Good job!