Massage your perinium with lube or extra virgin olive oil. Do this at least once a week. My hubby and I incorporated it into our foreplay. I also tore horribly bad with my daughter sixteen months ago and don't ever want to tear again. Kegals can help as well, but massage is vital!
You are more likely to tear more when you receive pitocin or an epidural. But as doulamommy said massages to the perinium are nice :)
They cut me with my first son 18 months ago and it healed pretty nice. Itched for a while but no pain at all after at least 6 months. I'm terrified to rip!!
I read that right when you feel babys head coming dont push anymore. Relax and let thecontractions push the baby the rest of the way.