Wiktionary
n. The concern and care for a 'clean', healthy (state of) mind (conscience and thought).
WordNet
n. the branch of psychiatry concerned with psychological methods [syn: psychotherapy, psychotherapeutics]
Usage examples of "mental hygiene".
Naval Security had a better reputation than most of the PRH's security organs (the Mental Hygiene Police had far and away the worst), but they were still security.
The formality of trials had been an irritating nuisance which InSec had felt no particular need to burden itself with, and everyone had heard whispered tales of someone who had been made to disappear by InSec, or the Mental Hygiene Police, or one of their countless sister agencies.
Eliot looked sleekly marvelous, tall, tailcoated, his big, friendly face pink, and his blue eyes glittering with mental hygiene.
Public Information was the official government spokesman, its main propaganda pipeline, but it had also wrested the Bureau of Mental Hygiene away from the Ministry of Public Health twenty years before.
Jessup employed the Mental Hygiene Police with a cold and ruthless dispatch which sometimes frightened even Harris, and his personal control of the MHP made him the most powerful member of the cabinet, after the President himself.
Looking back, I realise that it was the first session in a short course of mental hygiene.
Most of the popular religions and mystical systems teach it, along with countless schools of mental hygiene and discipline.