I started using a CPAP in October and I adjusted very quickly. I was using it so much that my insurance company stopped monitoring me after 2 months (usually they monitor for 3 months). One thing that I've found helpful is to put the mask on while I'm laying in bed watching TV. This way, I've already adjusted to the mask by the time I'm ready to go to sleep. If I wait until I turn the lights off to put the mask on, then I struggle to adjust and I get frustrated.