Perfection is Yoga in any field of life, or in any vocation. Yoga makes one a perfect person. But it is only a few who want perfection in anything. While many would like to fulfil their desires, perfection is something they cannot understand. The attempt to fulfil desires is the opposite of perfection.
Perfection is balance and harmony in life, while desire is an imbalance of thought.
Yoga is a system of striking a balance, firstly with persons and things outside, and later in one s own being, in the physical, vital, psychological, intellectual and spiritual levels. The basic instruction of Patanjali in this regard is Yama and Niyama. These fundamentals are attempts to establish harmony between the society and in the layers of one s own being. If you are discordant in yourself, you cannot be at peace with yourself, much less with others. You will only create an atmosphere of unhappiness wherever you go, for, in yourself, you are unwell.