Dear Friend,
Namaskaram, what your friend has told is true, as this cannot be just like that though, as it has to be learned from the Guru or a teacher who is experienced to handle. So proceed without any doubts in mind, like a child who approaches to her mother without any questions in the mind. It is only possible to experience by self and cannot be explained. Try to attend the Inner Engineering or Isha with Saduguru.
Regards,
Ashwin Hemmad
AUM NAMAHA SHIVAYA