[uncle duncan]

Like the other poster said, writing to your strengths is the most honest approach. But in that vein, there's nothing wrong with trying to improve your craft. Telegraphed lyrics are the worst. The listener gets no reward for paying attention, so they tune out. By the same token, writing too abstract can turn off the listener, because even if they do pay attention, they get no payoff, because there's nothing there but words stuck on top of a melody.
So, you consider what you want out of it. Do you want to be ignored when you perform? Do you want the audience to walk out? Or do you want to reach your listeners, win them over, and then sell them your CD's?
I had a writer in here a while back. Her approach was, she captured the inspiration, wrote it down, and it was done. It was sacred, and re-writing was out of the question. So I suggested to her that inspiration can be like a boat - you can get in the boat and sit at the dock, or you can get in the boat and travel all the way around the world. She went to a different studio to do her project, and was I relieved.
The moral of the story? If you're only writing for yourself, don't be surprised if you're the only one who likes your songs. (Not addressed to the poster, or anyone else - just a general rule.)