Optimizing sleep improves productivity. Not a hot take. I don't know anyone who enjoys blowing an entire day sleeping. Do you? Perhaps people who are ill (whether they know or not) need 12-14 hours of sleep a day but a normal healthy person can get by on 6-8 with 7 being the recommended median for most people.
Psychological health is the hardest problem we face. The entire field of mental health is rife with fraud. Psychology as a "science" suffers from one of the greatest reproducibility failures we have witnessed. We have legitimately no idea why "mental health" is a problem in 99% of cases and our medicines and treatments are only marginally better than electroconvulsive therapy and divination to drive bad spirits away. We have, for example, almost no idea how and why SSRIs work. Many anti-depressant studies fail to reproduce. We often overmedicate people who just have a little sadness resulting in even more difficult and sometimes fatal problems. The only other field with more problems is chiropractic which, by my estimation, is only marginally less scientific than psychology. In fact if I pulled a random psychology study and compared it's reproducibility to a study on cracking people's spines to fix slipped discs I'd imagine they'd be similarly impossible to reproduce.