Many people own a continuous positive airway pressure (CPAP) machine and they avoid using their machine because it can be awkward or uncomfortable. There are adjustments you can make to increase your compliance with CPAP therapy. Change Your CPAP Mask The standard CPAP mask fits completely over the mouth and nose, which can be intimidating and uncomfortable. Furthermore, you may need to force yourself to sleep on your back, which is not always easy to maintain throughout the night.