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(4) Mental stability-Chittasamadhi, that yoga or steadiness, is also a definition of yoga. Because the meaning of the root word "yuuj" is to attain samadhi. Therefore, Chittasamadhi-mental stability is yoga. This is also true. As long as the thoughts of the mind wander here and there, the mind will not become stable, and until it becomes stable, it will not attain samadhi-self-absorption. When the mind becomes pure, it becomes stable, and when it becomes stable, it attains samadhi-self-absorption. In this yoga, conquering the mind, controlling the mind, is the main thing. This mind is truly "difficult to control, difficult to please-to subdue." The Gita says, "This fickle mind is restless and extremely powerful. It is very difficult to control it like the wind." The tricks of this mind-monkey are heavy! This "mind" is neuter, but it beats-pushes all men! On the other hand, it is "masculine" and capable, but this mind cannot be controlled by anything!
"The mind does not stop, O Kunthujin! The mind does not stop; as much as I try to keep it, it runs away. Kunthujin! I have known that it is neuter, it takes all men; on the other hand, the man is capable, but it cannot be controlled by anything." - Shri Anandghanji.
To subdue this mind-monkey, first it should be tied somewhere or given some work to do, so that this poor monkey can climb up and down! For example, the one who has conquered his mind, the Supreme Being, the Vitarag Prabhu, should be tied to the pillar of his feet with the chain of love, so that this child cannot move around. Or, let it loose to play in the Shruta-Skandha, so that it can climb up and down in it! Let it eat as much as it wants of the fruit of the soul! Let it pick the leaves of the vow! Let it swing on the branches of the knowledge! Let it dance and jump in the vast root part! Or, as Shri Pujyapadaswami has shown the easy and best method of mind-samadhi in Samadhishatak, it is this: "Separate the soul from the mind with speech and body, and abandon the actions of speech and body with the mind." etc. By the power of detachment-study
*"चञ्चलं हि मनः कृष्ण, प्रमाथि बलवद् दृढम् । तस्याहं निग्रहं मन्ये, वायोरिव सुदुष्करम् ॥" x“युञ्जीत मनसात्मानं, वाक्कायाभ्यां वियोजयेत् । मनसा व्यवहारं तु त्यजेत्वाक्काययोजितम् ॥"