12.15-20  Yasmat  etc. upto  Me priyah.   One who has no fixed thought :  One who has no resolution,  [in his mundane life] like  'This alone must be done by me'.  He, who enjoys, with contentment, both pleasure and pain as they come, and has his mind completely absorbed in Supreme Lord - that person happily (or easily)  attains the Supreme Isolation (Emancipation)