Hi Nerdo ~ I chose not to breastfeed for personal reasons and I definitely experienced some painful moments last year as I waited for the milk to dry up.
One thing I can tell you is that hot water is a "let down" trigger. It will make your milk come out. I'm not saying don't take a shower, but just adjust the temperature accordingly.
I also took Tylenol occassionally and wore very tight fighting sports bras with nursing pads in them. I never did the cabbage leaves or anything like that. It was never necessary for me. Your milk will dry up as long as you don't press on your breasts, lean against them, or stimulate them in any way. Granted, when your baby cries, they may leak...but give your baby a bottle right away.
One more thing - and this will sound weird. You may want to stay away from other babies until your milk dries up too. If you hear another baby cry, you may get a let down reflex...highly annoying! It happened to me in the grocery store! I ran out leaking...but that's another story.
Congratulations on your new baby!