Continuous enquiry

If you can give up duality, Brahman alone remains, and you know yourself to be that Brahman, but to make this discovery continuous meditation is required. Don't allocate periods of time for this. Don't regard it as something you do when you sit with your eyes closed. This meditation has to be continuous. Do it while eating, walking and even talking. It has to be continued all the time.
-- Annamalai Swami p8, Final Talks.