I am pretty health-conscious, so when my girlfriend and/or I make dinner--no, I don't have a cook!--we choose the healthier options: lean meats, steamed veggies, fish, etc. Of course, there are always those cravings for the "bad foods" that I do give in to once in a while!
Days when you just don't have it, you don't mail it in, you don't pack it in, you give it everything you've got. You grind it out, I don't care what kind of game you have, you somehow try and find a way to get it done ... That's part of my attitude and belief, that you should always have the switch on. You can't turn it on and off.
The key in shooting any good round is to give yourself some chances and, tomorrow, if my swinging is feeling any good, I'll have some chances. But, if it's not, then I'll have to give myself those 15- to 20-footers and hope I can make those.