It is one of the most beautiful compensations of life,
that no man can sincerely try to help another without
(at the same time) helping himself.
Ralph Waldo Emerson, 1803-1882

There is no action in life we can do for/to another
(or refuse to do) which does not have an interaction
with our deepest self.
Giving of our best to others.....simply ensures that
we are fulfilling our own highest standard of self...
for how else could we define 'best' if not by our
own standard?