Songwriter's Block

I'm working on a song (for the musical) that I've had initially arranged, and the chorus is not sounding good at all. Just doesn't seem to fit when I have it arranged, but in my head it's OK, although I'm still having trouble with the transition to the chorus. I've been toying with the chords and am having a difficult time finding a transition. I've also looked over the chorus, and stared at it trying to think of something different. But I've kept it simple and it follows the "and that's why I say" thought from the verse leading into the chorus as per Sheila Davis in her book Successful Lyric Writing. I'm just stumped.