You don't need to be profound in everything you say because chances are someone has already said it. There's nothing new under the sun.If I'm ever stuck in a lyrical rut, I steal other people's words through quotes and idioms.
New lyric: my blood's wet with fear, blood set to veer
Idiom: cart before the horse
New lyric: heart before the course
Idiom: turn a blind eye
New lyric: a blind lie, a blind sigh
All we need is a spark. A blind eye is cliché but a blind sigh points to something deeper and mysterious.
Stop trying to create something new and original and steal words from other people via quotes and idioms. Also, steal images from Unsplash, that's what I did for the beginning of this blog. You need to be careful elsewhere but Unsplash is as free as you can get.
I spent five minutes writing down idioms from The Free Dictionary; check these out and see if they create a spark.