I've never done drugs or smoked, so that was never an issue for me. And I only drink socially, so that was not a problem to give up. But before I got pregnant I never minded much if someone smoked around me, and once I became pregnant I wouldn't go near anyone who was. I refused to take medication during my pregnancy, even doctor-approved medicine like .Tylenol. But that was my preference. I tried to limit my caffiene intake (semi-successfully) and otherwise ate a healthy diet.
As far as labor, I went as long as I could without an epidural, and only accepted one when I felt completely out of control. I had already been in labor for over 24 hours, and the epidural relaxed me to a point where I could calmly push my baby out. I had no negative reactions to the epidural and neither did my daughter. I was given a prescription for .Tylenol 3 which I did not fill, and only took extra-strength .Tylenol when my after-labor pains were extreme.
I am also exclusively breastfeeding my daughter, which I am doing completely for her benefit and health. I still do not drink, even socially, and maintain a healthy diet to ensure that my breastmilk is untainted and my body is healthy enough to continue to produce it. And I do not allow anyone to smoke near or around my child.
Everything I have done has been for my daughter.