Most contractions start as a tightening in the lower back and radiate to the front of the abdomen. Some contractions start at the top of the uterus and travel down the abdomen. Adjust your environment. If you are able to stay home for the first few stages of labor, make sure you are in a quiet and peaceful place. Have someone take care of older children - out of the house if possible.
Gravity is a great aid in birthing a child.
Walk around your house or, if you feel up to it, go for a walk outside. Walk the halls of the hospital if you are not hooked up to monitors. Make sure your birthing partner is with you at all times. Experiment with positions. Have a list of possible positions you would like to try.