Sweet, although to a certain extent you can't control exactly what your body does in labour (although there are heaps of things you can do to help it do what it's going to do naturally), but you can control how you respond to your body.

If you are feeling overwhelmed by the thought of your body being out of control, remember that your body is in control, but as sentient beings we are so used to our minds controlling our actions that the thought of relinquishing that control to purely biological processes can be frightening. Perhaps pregnancy yoga or meditation would help you get in tune with your body and in a headspace where you can work with your body rather than feeling like your conscious mind needs to direct the process.

It might also benefit you to learn as much as you can about the physiological process of labour and that there is a huge variance of 'normal' in terms of what each woman feels in labour, so that when it happens you are better able to go with the flow of it rather than worrying about it.