Getting in the right head space is huge for going into labour IMO. I think it held me back in my last birth. I was scared of a repeat of DS's birth (which turned out fine, but was tough for a while). DH and I had a chance to talk it through and pray about it, and I went into labour just a few hours later. I've re-read Ina May's Guide to Childbirth before my last few births and I find that a great reassuring book to read! Perfect for getting into the right frame of mind for birth.
Hope you have an enjoyable, relaxing (productive? ) day getting ready for this baby Beatrix!