An ancient Greek thinker gave us the three principles of mental health –

know yourself,
accept yourself,
be yourself.

It does not help a bit to pretend that we are what we are not. But it helps a lot towards self-control, inner harmony, and mature character when we have the frankness and courage to accept ourselves just as we are.

If we learn to accept the people at home, at work, in society just as they are, with their faults and failings as with their faults and failings as with their good qualities, we have a secret of peace and harmony in our personal relationships.