Turn a giant rant into a song?

A little while ago I wrote something that I really love, it was a piece concerning something that is very close to me and I love how it all came off, but it was all just written in prose. I'm no good at turning things from prose into poetry or lyrics at all.
What's the best method, usually?
I hope it doesn't seem, like I'm young, foolish, and green.
Let me in for a minute, you're not my life but I want you in it

O Dayya, te echaré de menos, siempre

Y siempre
Y para siempre
Take all the emotions and feelings from the piece you have already written, and just write a song using all those feelings. You can't actually take piece A and turn it into piece B, usually. So you're probably just gonna have to write something completely new. You can use lines and bits and pieces from it, though. But you're gonna have to fill it in with new stuff.

Today I feel electric grey
I hope tomorrow, neon black