I've found the exact opposite to be true for me. I started with a nasal mask and had no issues with it except leakage. I tried to transition to a nasal pillows mask due to leakage while changing sleep positions. The nasal pillow mask was too intrusive to me, but then again I didn't continue trying it past a few days. It is possible that I could acclimate to it over time, and I may try it again. I would suggest wearing the mask while watching TV or surfing to get accustomed to it. I've gotten to the point that I'm not even aware of it once it warms to body temperature. Keep in mind that you can remove it easily any time you want, and it may reduce your anxiety. In fact, you may want to practice doing that and see how easy it is. Wearing the mask won't cause you to suffocate.