The practice is making the effort to maintain steadiness.
This practice becomes well-grounded when continued with reverent devotion and without interruption over a long period of time. 1.14
when meeting those in weaker or unhappy circumstances;
towards others when they are better or more successful;
Showing indifference to those who intentionally try to hurt you at an emotional level.
These five restraints:
harmlessness, truthfulness, non-stealing, chastity, unselfishness
can be practised voluntarily at all times, because they are not limited by rank, place, time or circumstance and constitute the great vow. 2.31
… reducing movements in body and mind, while meditating on the infinite.
With that posture, practise control of inhalation and exhalation.