Just as underground water is the sustenance of all trees, theAtmais the underlying source of all the bliss that the individual experiences. The process of digging a borewell to bring the underground water to surface level involves steady hitting, digging, and thumping through a pipe which holds and directs the drill. The people who do the boring take a lot of care to ensure that air does not go into the pipe, for then the drilling process becomes unsuccessful. FInally through a lot of effort, you bring the subterranean water to the surface level for human consumption. So too, you must undertake the repetition of the Lord’s Name (Japam) very intensely taking care that you do not allow the attachment to worldly objects (Vishaya vasana) to enter and interfere with the process.(Divine Discourse, Oct 16, 1964.)