Wow, who knew there were so many of us noncompliant CFers out there! I have to agree with everything everyone has said...I was pretty noncompliant for a LONG time. I would do nebs and AC when I was sick, but I always bounced back and then fell off the wagon because I felt fine. It's weird because I'm very disciplined and even hard on myself in other areas of life, but doing treatments made me feel "sick" and not doing them made me feel "healthy."
My big awakening was when I suddenly realized that not doing nebs/treatments was actually making it impossible for me to keep up my ignorance is bliss style routine - as in, the more I ignored the treatments so that I could feel "normal" the less "normal" I became, and the less able to do the things I loved. After losing quite a bit of lung function in a relatively short span I got my act together. The simple fact is some people with CF are healthier on a day to day basis than others, some of us get away without treatments for days, months or even years, but eventually we all have to face the fact that our bodies need a little extra help and attention. I don't believe in scare tactics, but I can tell you from experience that an ounce of prevention is worth a pound of treatment later.
My advice to you is to pick something you REALLY love doing and use that as your motivation. Maybe you enjoy dancing with your husband? Or early morning jogs? Hiking, biking, walking the dog, evenings out with your friends, whatever it is. Then everytime you want to skip a treatment think to yourself "this is 20 minutes of inconvenience that will help me be able to __(fill in fun activity here)___ for the rest of my life." It keeps the focus on the positive and makes it clear why we put up with all this crap to be healthy. Then reward yourself. I'm personally a big fan of ice cream post TOBI neb. Kills the nasty taste and makes me feel like I deserve a treat!
Good luck!
