have said elsewhere of _selfish_ and _unselfish_ occupations. It is
the selfish occupations that produce nerve-exhaustion. Those that
are unselfish seldom result in the disturbance of the harmony or
equilibrium of our nature--whether we regard it as physical, mental,
or spiritual. This may seem to be a trancendental statement--perhaps
it is. But I am confidently assured of its essential truth. That man
or woman who is truly engaged in an unselfish work--a work that is for
the good of others--has a right to look for, to expect and to receive
from the great All Source of strength, power and serenity all that
is needed to keep the body, mind and soul in harmony, consequently in
perfect health and free from worry.

Hence the apparent paradox that, if you would care for yourself you
must disregard yourself in your loving care for others.

One great reason why worry produces nervous prostration is that it
induces insomnia.

Worry and sleeplessness are twin sisters. As one has well said:
"Refreshing sleep and vexing thoughts are deadly foes." Health and
happiness often disappear from those who fail to sleep, for sleep,
indeed, is "tired Nature's sweet restorer," as Young in his _Night
Thoughts_ termed it. Shakspere never wrote anything truer when he
said:

Sleep that knits up the ravell'd sleave of care,
The death of each day's life, sore labor's bath,
Balm of hurt minds, great Nature's second course,
Chief nourisher of life's feast.