Preparing your breasts for breastfeeding!!

Hi ladies!

I have heard a lot of stories about how it hurts to breastfeed... Some have told me that I need to "toughen" my breasts while I am pregnant, massaging them with nipple cream etc. If I don't, apparently my nipples will crack and bleed!

This has kind of scared me! Can anyone tell me if it does hurt that bad, and if there is anything you can do to prepare your girls for this?

Thanks!

T