There are four kinds of worship. The first kind of worship is undertaken whenever one is in trouble or distress, then God is forgotten after relief is obtained. The second kind of worship is carried on by the worshipper seeking the good things of life from the deity he worships without depending on others. The third type of worshipper offers worship for the sake of others, praying for the welfare of all. The fourth kind, which is the highest form of worship, is worship done in a spirit of complete surrender to the Divine and dedicating all actions to the service of the Divine. Man's attitude towards God should not be based on the fulfillment or nonfulfillment of petty desires. You must feel that whatever happens to you is for your own good.
(Gems of Wisdom, Bhakthi (Devotion), pg 300)
