योगश्चित्तवृत्तिनिरोधः॥२॥
yogascitta vritti nirodhah ॥२॥
Controlling the fluctuations of the mind is Yoga.
In the second sutra of the first chapter, Samadi Pada, Patanjali offers us the definition of Yoga.
Swami Vivekananda translates this sutra as “Yoga is the restraint of the modifications of the mind-stuff”.
Thus, Yoga is achieved when the practitioner, can of his/her own will, pause the urges of the mind having mastered the ability to set still the many alterations that move through one’s thoughts and emotions.