When a thought rises up “lunch time” – “When is lunch?” As soon as this thought arises rather than taking the thought, you ask yourself “To whom has this thought arisen?”
   This thought about lunch. “To whom did it arise?” You immediately get the answer “to me”. Because you’re completely identified with me. This thought arose to “me”.   And then you ask a second question “Who is this me?” 
    You think you know, but you don’t. The second question doesn’t have a verbal answer. You can say “I’m consciousness”. Well, that doesn’t really answer that question. 
    So you come to Silence, you fall into Silence. You fall into the Emptiness. This is actually Self Enquiry, its that simple. This question is a fundamental part of the spiritual investigation.