Krishna says to Arjuna in the Bhagwad Gita : 'Work alone is your privilege, never the fruits thereof. Never let the fruits of action be your motive. Never cease to work. Work in the name of the Lord, abondoning selfish desires. Be not affected by success or failure. This equipose is called Yoga.'
Yoga- a deliverance from contact with pain and sorrow
Yoga is the wisdom in work or skilful living amongst activities, harmony and moderation