Karma yoga prepares the mind for the reception of light or knowledge. It expands the heart and breaks all barriers that stand in the way of unity or oneness.

By doing selfless service you purify your heart. Egotism, hatred, jealousy, superiority and all the kindred negative qualities vanish. Humility, sympathy, tolerance, and mercy pervades. Separateness is annihilated. Selfishness is eradicated. You will get a broad and liberal outlook of life and will begin to feel oneness and unity. Eventually you will attain knowledge of the self (atman). You will realise 'one in all' and 'all in one' and will feel unbounded joy. World is nothing but God's manifestation. Service of all living soul is service to God.

When the thought of doing good to others becomes a part of a man's being, he does not entertain any least motive at all. He takes immense delight in serving and doing good to others. He gets inner spiritual strength and power by performing motiveless and selfless actions.

Never grumble or murmur when you do service to others. Take delight in service. Be ever ready to serve others. Watch for opportunities to serve. Never miss a single opportunity. Create opportunities. Create field of good service.

In the practice of nishkam karma, there is no loss of effort. There is no harm. There is no transgression also. Even a little of this practice can protect from great fear of birth and death with its concomitant evils. The path of karma yoga eventually leads to the attainment of the self, satchitanand.