What swara yoga says about a steady mind
Most advice about a restless mind begins with the mind. Swara yoga begins with a physical reading: which side are you breathing through, and has it been that way too long. Its account of unsteadiness is unusual in having two opposite forms rather than one, with a different correction for each. These nine concepts set out the reading and what the tradition does with it. Some of the descriptions reach further than I would, and I have kept my notes to what the texts assert.
The Breath as the Bridge to Consciousness (Citta-Prana Sambandha)
The premise is simple: where the breath wanders the mind wanders, and when the breath is still the mind is still. Everything else in swara yoga depends on this holding.
Hatha Yoga Pradipika 2.2
The Danger of Excessive Solar Overdrive (Surya Ativridhi Dosha)
One form of unsteadiness is heat: the right side running too long without relief, which the tradition associates with anger, sleeplessness and burning out.
Shiva Svarodaya 3.28
The Danger of Excessive Lunar Inertia (Chandra Ativridhi Dosha)
The other form is its opposite: the left side running for hours, associated with heaviness, congestion and low mood. Both count as imbalance here, so calmer is not automatically better.
Shiva Svarodaya 3.22
Managing Difficult Conversations and Anger (Krodha Niyantrana)
The instruction for a rising temper is to check which side is running before you answer, and to change sides before you reply. It is a delay with something to do inside it.
Shiva Svarodaya 3.25
The Neutral Mind and Unbiased Discernment (Upeksha Buddhi)
The central channel is described as the state without bias or reactivity, witnessing rather than taking a side. That, rather than a pleasant mood, is what this tradition means by a steady mind.
Yoga Vasistha 3.44
Protecting the Sushumna Window from Distraction (Sushumna Rakshana)
When you notice both nostrils open equally, the instruction is to stop and close your eyes for a couple of minutes. The window is short and the tradition treats it as the best moment available.
Shiva Svarodaya 1.175
The Golden Gateway to Dhyana & Samadhi (Samadhi Dvara)
That same even state is named as the doorway to meditation. The claim is that sitting is easier when the two sides are level, not that effort is what levels them.
Hatha Yoga Pradipika 4.17
Leadership Decision-Making Under High Uncertainty (Nayakattva Svara)
Decisions that cannot be undone are to be held back until the breath is even or settled. The rule is about the state you decide from, not about the decision.
Kautilya Arthashastra 1.7
Creative Ideation vs. Logical Execution (Srijana va Nirvahana)
Open-ended work, deciding what to make and what it should be, is assigned to the left-nostril phase, and precise sequential work to the right. Whatever the mechanism, the habit it produces is a sound one: match the task to the state you are actually in.
Shiva Svarodaya 3.15
The tradition's own descriptions run further than what you can check at your desk, into physiology I would not claim on its behalf. The part that stands on its own is narrower and still useful. Before you answer, decide or sit, take one reading of your own state, and treat calm and drive as two things that can each be in excess.