disposition are affected by the condition of the mind upon falling
asleep. Mental discords not only prevent sound sleep but also leave in
the blood poisonous waste from the chemical changes which in turn dulls
and impairs the brain action.

Many business men suffer so much torture at night that some of them
actually dread to retire because of the long, tedious, wakeful hours.
Financial troubles are particularly exaggerated at night; and even many
optimists suffer more or less from pessimism then.

Business men ought to know how to turn off brain power when they are
not using it. They would not think of leaving or closing their
factories at night without turning off the machinery power. Why should
they then attempt to go to sleep without turning off their mental
power? It is infinitely important to one's health to turn off mental
power when not actually using it to produce something.

When you get through your regular day's work, why allow your precious
energy to dribble away in little worries? Why carry your business
home, take it to bed with you, and waste your life forces in
ineffective thinking? Why permit a great leakage of mental energy and
a waste of life-force? You must learn to shut off mental steam when
you quit work.

Many men use up almost as much mental energy in the evening and in a
restless night as during their actual work in the day.

Refresh, renew, rejuvenate yourself by play and pleasant recreation.
Play as hard as you work; have a jolly good time, and then you will get
that refreshing, invigorating sleep which gives an overplus of energy,
a buoyancy of spirit which will make you eager to plunge into the next
day's work.

No matter how tired or busy you are, or how late you retire, make it a
rule never to go to sleep without erasing every unfortunate impression,
every disagreeable experience, every unkind thought, every particle of
envy, jealousy, and selfishness, from the mind. _Just imagine that the
words "harmony," "good cheer," and "good will to every living creature"
are written all over your sleeping room in letters of light_.

People who have learned the art of putting themselves into harmony with
all the world before they retire, of never harboring a thought of
jealousy, hatred, envy, revenge, or ill-will of any kind against any
human being, get a great deal more out of sleep and retain their youth
much longer and are much more efficient than those who have the habit
of review