My husband has been using a CPAP machine since 2006 and can't live without it. I on the other hand was first issued one in 2008 and have not had much success. I've attempted to use it multiple times, but with no luck. Two weeks ago I decided to give it another try as it's needed for the surgery. So far it's been going well in terms of keeping the mask on, but I do not feel well rested. If anything I feel worse because I spend time at night adjusting my mask for the best fit. The nasal pillows are too big (even small), and the triangle shaped nose mask in small is to big too. I have an appointment with my doctor next week, so I'm hoping to talk about my options and a possible new sleep study. But as long as I can keep the mask on then I feel like I've made positive strides.
Good luck with your cpap.