I have tried Sleep Restriction Therapy on three separate occasions. The first time after reading about it on the internet. The second time after reading a book on the subject. And the third time after being referred to a psychologist for CBT-I. These three attempts were roughly a year apart from each other.
All three attempts failed miserably. When trying to pursue "something further" with my psychologist, I realized that SRT was really the only thing in his bag of tricks.
I know I'm not the only person who has faced this. So my question is: Is there a "next step" for a person for whom sleep hygiene, pills, and SRT have failed to bring relief?