I have found it to be just as you describe, Eddie. I underwent a sleep study and was prescribed a BiPAP, but I didn't notice much difference. Then it broke, but was still under warranty. The replacement was a considerably more advanced. (Philips Respironics Dream Station.) I was having trouble getting more than 2-3 hours a night with the old machine. With the Dream Station I get 4-6, and it's making a huge difference.
In 2015 I decided my remaining psych issue was the PTSD. I found a specialist (God bless that insurance!) and we met for several months. The depression had been under good control for a while, and once I retired I didn't need the ADD meds except on certain occasions. After a while the therapist and I decided I was good to go. After 50 years I was through with regular counseling. I see a psych nurse for meds, but that's it.
Fact is, Trudy is the best medicine I could have. Everything else had to happen, too, but the results are spectacular!