It is very easy to get set in the usual way of writing a poem. This may have proved an easy way and you often use it. Take for instance a well known pattern, as in a/b/a/b – this can be seen in the following lines:
In the land of the living and joy of being free, comes happiness in giving between you and me.
This is a rhyme pattern easy to slip into when an idea to write about comes to mind.