Spiritual efficiency

In scientific terms output divided by input is called efficiency of a
machine.In spiritual terms if a person can remain happy with meagre
resources he can be called spiritually efficient.The spiritual
efficiency increases when a person does not waste his spiritual
resources in vices as he is guided by the Guru's wisdom.Often it can
be seen that Gurmukhs with meagre resources lead a far healthier and
happier life than a person who has vast resources at his disposal.It
is because of the spiritual efficiency attained by the grace of the
Guru.