Gospel of Swami Sivananda
The Master enquired of Sri Swami Nityananda, "Where is Swami X. working"?
Swami Nityananda mentioned the department in which Swami X. was working.
Then the Master said, "Service itself is meditation. Work itself will lead to knowledge. When the time comes one will attain Self-realisation. While engaged in selfless service one will come across various names, like 'Gopal', 'Krishna', 'Govind', and so on. All these are God's Names and if you remember this point your work will become worship".