The key is to be motivated by what you write. I agree that write from something personal. Always works the best. however, I have a fun little ditty running through my head for a while and have been mentally working on the lyrics. They are deep or at all personal, just fun. So long as it move you.

I went to a night music school open house one night and one of the trial classes was about songwriting and lyrics. First thing they guy said was to stop worrying about rhyming and get out the idea. Once you have the ideas out there, you can craft them in to something that flows.

Key is to stop from getting caught in the couplet rut. Even though the majority of the time, that's about how it works but if you get yourself outside of that, you might find a little something that you didn't expect and make you even happier wit what you wrote.

What do I know from Adam? It's not like I have a song anyone's ever heard ;)