That doctor's story reminds me of this article:
5 things you think will make you happy (but
won't)
In the end, there's only so much that fame, wealth,
beauty, intellect, or power can do to make you happy.
Instead, the most effective things that can make you happy are
friendships, altruism, and religion.
In other words, you can only really be happy if you take the
focus off making yourself happy.
It seems intuitive.
Yet hard to achieve at times.
But sometimes, bringing a smile to others rather than just
yourself means just so much.