The study will be an active interventional program for approximately six months in duration. All participants will initially undergo an initial assessment interview. Personnel trained and certified in mindfulness-based stress reduction (MBSR) will run mindfulness-based groups in 6-8 weekly 1 1/2 hour sessions (the staff group will comprise of 6 sessions and the parents' and patients' groups will be 8 sessions long). Participants will learn and engage in various formal and informal meditation practices during experiential learning of skills, including concentration, mindfulness of thoughts, emotions, feelings and bodily sensations, decentering, and letting go. Each group will include both practical exercises and a psycho-educational component. Daily homework, an essential aspect of the course, will include meditation practices together with exercises designed to integrate application of awareness skills into daily life. On day 0, participants will complete a battery of questionnaires as well as tests of the physical status of CF disease. This battery will be repeated at 8 weeks, and again at 6 months.