I am! I was DX at 12 because I weighed 48 pounds. They had tested for everything else so they thought the would give CF a try. I have no family history of it so we were very surprised with the results. I was very healthy until my mid 20's. FEV1 were over 90%. I didn't start any preventative stuff until I was 19. I didn't know there was stuff to do. I was extremely healthy. Of course, things change. I am now 31 and My FEV1 are around 55%. I do tons of preventative stuff now. My FEV1 was around 35% 2 years ago. I got them up and have been staying pretty steady in the 50s. I strive to get them higher but nothing seems to be working. All I can do is try!