If there is no faith, one will never attain to that subtile sense. One should, therefore cherish faith. The mind should be associated with Prana, and Prana should then be held within Brahma.
अविस्रम्भे न गन्तव्यं विस्रम्भे धारयेन्मनः। मनः प्राणे निगृह्णीयात् प्राणं ब्रह्मणि धारयेत्॥