If you have Sleep Apnea, there is a possibility the reason you are not able to lose weight is due to poor sleep caused by the apneas throughout the night. It is common for overweight individuals to suffer from sleep.
Watch Chris discuss some of the issues addressed in this blog. He goes into more detail and shares his own experience: https://www.youtube.com/watch?v=beqqmurlFcY&t=248s
A simple guide for Meditating: https://www.mindful.org/how-to-meditate/