Also, a roasted turkey breast is a wonderful thing to brine. That's because you can roast a turkey breast until it is perfectly cooked and not a second longer, so the brine is actually doing some good — specifically, adding flavor and moisture to the breast.
One thing to note is that you need to bring the brine to a boil and then let it cool thoroughly. But don't add an uncooked turkey breast to a room-temperature brine. That's a food safety hazard, as room temperature water is a great place for bacteria to multiply. The brine should be icy cold when you add the breast.
The best thing about making your own brine is that it's so easy. You probably have all the ingredients already. If you were already planning to roast a whole turkey breast, you still have time to make a batch of brine and let your turkey breast brine until you roast it on Thanksgiving. Check out How to Brine a Turkey Breast.