I'd be happy to take a look at some of your lyrics that don't have music and see if I can contribute some ideas to you. I've worked with several others on this forum, including several of the people who have replied to you here, on collaborations just like that. We're the body of Christ and it's great when we can work together in harmony.
Song Collaboration & Originals:
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Sing your prayers, get a voice recorder and play the song and just sing whatever comes, trust God to move by faith. Know when the song is done and when it needs to be left alone. If there is another song you can work on and feel more inspired to do so then let one rest. I have so many songs that I can always leave some when not much is coming in the way of inspiration.
Don't know if you're still looking for responses, but I've found that some songs just refuse to budge, so it's best to actually let them rest awhile. Artistic people need time to incubate - stew, digest, ponder - not just create. The ponder process can be just as helpful. Go do something else for a while, or play a basic song (chopsticks works well) to get the angst out. Or leave it a few days, and come back to it fresh.
Don't persist if the song is resisting. As creative people, as soon as a job loses it's novelty, we lose interest. We become bored and frustrated easily. As soon as you feel that, change what you're doing - start writing about the view outside, the curtains on your window, how long it's been since you had a haircut - let the absurdity loose and see if that helps. Break up the monotiny of writing somehow.
And keep posting on here!