If your doctor recommends CPAP for your sleep apnea, you will work with them to find the right settings for your CPAP machine. It may take some time to get used to the CPAP mask and the machine.
Some people who use CPAP do not like the mask. They may find it is uncomfortable or prevents them from sleeping in the way they are used to. However, there are many different types of masks. If you dislike your CPAP machine or mask, speak with your doctor about finding a machine or mask that is a better fit for you.