I put off thinking about my birth plan for as long as possible while I was pregnant. Creating a plan meant I would have to think about going through labor - not something I was looking forward to. But it definitely helped to have a plan, simple as mine was, once I was at the hospital and my labor nurse was asking if I wanted an epidural. (Yes, please!)
Here are a few resources to help you write your own birth plan.
I'm the same way! I keep telling everyone that I won't be going through labor and delivery- she is just going to appear one day! LOL! Having done a tour of the maternity ward and my husband packing my bag has made it more of a reality but I think I am still in denial!