I Can't

Writing prose is bad for poetry.  You get so used to using lots of words, it's hard to stop.  Luckily for you, writing poetry isn't bad for prose at all, so go back the other way and you're fine

Already this is stronger, Rene.  You might like to think about altering the first lines a little, maybe:

Words shot towards me.
The hailstorm
scratched my thoughts

Use your line lengths to emphasise what you're saying.  This should be a staccato stanza, yes?  Then longer into the "memory" bit, because memory is more lazy.

"fetal ball" is cliched. 

Look for prepositions and such that you don't need, and can remove without sacrificing grammar beyond all hope, eg "on scattering the puzzle pieces" works just as well as "on scattering puzzle pieces".

Instead of things that tell, like "repeated shots", you might like to think about devices like onomatapoeia.

On its way, though