My success was very quick (within 2 weeks).
I was caught sleeping on the job and nearly lost my job. I had never slept on the job until my 28th year of employment. I started sleeping on the job about 6-7 months prior to having my second sleep study (May 2017).
I knew I had Apnea (I was diagnosed after my first sleep study back in 2010), but I'm very claustrophobic and could not find a mask that would work. So, I had refused any treatment for my Apnea for nearly 7 years.
I seemed fine until 2016, when I noticed that I was extremely tired all the time. It was difficult staying awake simply driving home from work. I knew I was bad, but I did not know how bad until I had been on the Bipap treatment for a few weeks. After a few weeks of treatment, I realized that I had been in a zombie like state. Before my treatment, math puzzles that I used to be able to complete in minutes were now very challenging. Some of the math puzzles I could not even complete. I was falling asleep while talking to family members, while watching movies, while reading books, while working on the computer - I had never had these issues one day in my life.
A few weeks after treatment, it was the difference between night and day. I was instantly energized. I felt like I had 20 years earlier. It was an instant game changer for me.
I was lucky that the DreamWear mask existed. I was able to get past my claustrophobia.
Every night is not perfect, but I wear my mask at least 7 hours every night. I now find it nearly impossible to go to sleep without my mask.