The Fear of Irrelevance

I've realized I have a new fear...   It happens between the pen and the page. It's not really the fear of writing as much as it is the fear that what I write becomes too predictable. Stale I suppose would be another word. 


You see I've reached that point where I realize that even that killer piece I wrote last October that has been published has to stand alone and what I write today and tomorrow has to be fresh and unique. Even if writing in a themed manuscript (especially if) you have to create from a fresh perspective. 


I guess what this really comes down to is the fear that my writing will become irrelevant. We all have to have fresh ideas or at least fresh approaches. It's one thing for a poet to find his or her voice, but that voice must be able to find a range of fresh ideas. 


So in those few moments when you first pick up your pen, what do you do to take your mind to some new direction?  Any tricks that you have to keeping your work fresh? I'd love to hear from others struggling with this and especially those who have fought this demon and are now secure in their writing as the pen and the paper first meet.