I moved alot during DS2's birth. With my other two I mostly stayed on the bed, but this time I moved from the ball to the shower, to standing over the bed, to the shower to the toilet to the shower (ect...) I loved the shower. It helped when things got overwhelming as it eased my contrax off a fair bit and I could regroup and go back into a position that brought on the strong contrax like on the toilet and ball. Whe I was in serious labour (7cm +dialated) counting my breaths really helped me. I haven't read any birth books or anything like that other than what I have learnt on BB, and for me counting my breaths through contrax really helped me focus. I took really deep breaths, really filled my lungs, through a contraction and focused on just breathing and not yelling through them, occaisionally my doula would guide me if I was getting too 'screamy', lol. I imagined baby moving down and everything opening for him and meeting him at the end through the contractions too. Knowing that it would end and I would meet my baby soon and having that in my mind kept me going. Having a great doula and DH just there really helped too, even though I don't like to talk or be touched during labour, I just like to know they are there. Also just remembering the buzz I had after I birthed DS1 really helped when things got hairy too.
Dunno if any of that gibberish helps, but you will find you 'thing' hun. And you can do it, you have done it! You will have your gorgeous little one in your arms soon.