I don't "fight" CF, really. I live with it. When people say "keep fighting!" it tends to annoy me. Hahahaa. It's like "No, I don't feel like it... you do it."
As for living with it, this is what it means to me. I do the crap I need to do. I go to my clinic appointments, I go on IVs when I need to. I pay my copays. I do my inhaler and my nose spray. I do my nebs and my therapy. I eat all the time. I take enzymes, I take vitamins. I exercise a few times a week. All sorts of good stuff like that.
Most of all, I enjoy my life. I will be the last person to tell you that I'm always happy. Nope, doesn't happen. But overall, I dig the whole "living" thing. I spend time with Mike, and the puppy and the ferret. I eat yummy foods, I sew, I clean, I play video games.
My "fighting" CF will consist of doing the best I can (within reason), hoping it helps me live longer, and enjoying whatever I can while I'm still here.