Calmness is the trait of a mind that does not easily become agitated. It does not mean slowness or lack of care. A calm person can still act quickly when needed, but without panic. Others often relax around them, and decisions made from calm tend to be clearer. Most of us have days when it comes naturally and days when it does not, which suggests it can be cultivated.
Gita 6.27 says that when the mind becomes peaceful, purified and free from the agitation of passion, the yogi naturally experiences supreme happiness, so focus on purifying your thoughts and emotions. Gita 2.65 says that in serenity sorrow ends and the mind quickly becomes steady in wisdom, so cultivate calm and clarity first. Gita 17.16 describes mastery of the mind as calmness, gentleness, quiet reflection, restraint and clean intentions, so cultivate inner quiet through reflection and silence.
The Gita also offers images and supports. Gita 9.6 compares all beings to the restless wind that moves freely yet always remains within the sky, so when life feels turbulent, remember that all activity unfolds within a larger, steady reality. Gita 14.11 says clarity of awareness is the mark of sattva, so create conditions for clarity through balanced living and healthy input. Gita 2.10 and 11.51 show a calm, kind presence that helps a troubled person, so seek what restores you. If you feel constantly tense or anxious, please also talk with a doctor or counsellor.