I was in my 60s before I was diagnosed, and it did take me a long time to get used to the CPAP therapy. For at least a few months, I only wore the mask the minimum for compliance, i.e. 4 hours per night. I don't remember how long it was before I learned I needed a chin strap to keep my mouth closed. Since those days CPAP machines didn't have reports I could read with software myself, I had no idea about results that could be verified. I could only go by how I felt.
My brother, who now uses BiPAP, was the person who encouraged me to stay with it. So much else was going on in my life the first 3 years of my CPAP therapy that it's hard to remember many details.
There was really no support from medical people until after I underwent AVR heart surgery. A technician came to the physical rehab center where I stayed for over 3 weeks after leaving hospital, and adjusted the machine for me. At that time, I was confined to sleeping on my back, so he probably had to increase the pressure, which is not something I knew about then.
All I can say is, be kind to yourself, and understand that xPAP is first and foremost, a therapy. Which you need.
One of the things I believe would make it a lot easier for people to comply is if a way to measure blood oxygen saturation was built into the home therapy system. That's the bottom line for me -- if the cells of my body, brain cells, organ cells, skin cells, muscle cells, nerve cells, eye cells, stomach cells, are not getting enough oxygen, I'm dying faster than I need to. What sleep apnea does, besides make you sleepy during the day, is decrease the efficiency of getting oxygen into your body where it's needed.
It's a nuisance to get used to, perhaps, but I think it beats having to wheel around an oxygen tank with you everywhere you go. Just my personal opinion. The systems are improving all the time. And yes, you can get acclimated to the system and improve your energy and your longevity.
And you'll look forward every night to . . .