It got hard, too much for you
While love was growing, pain did too
You chose to quit while you were ahead
Now its over, love is dead

I learned to walk and run with you
So much pain you helped me through
It's found its place, back in my heart
As I'm thrown back to the start

Even though you made me strong
I ruined it all, choices wrong
Took you for granted, holding my breath
Spending my days waiting for death

Though I am still not happy with the last stanza, I attempted to rewrite some of what you have lol I think it is a good start, you just need to work on your rhyme and flow and find a rhythm. keep your syllables close together, usually only a variance of one or two. Keep working at it, you had some good stuff here.