Because of you repeatedly hearing from Me about Atma-svarupa, the Mind/Intellect required to fixate upon arva-sukshma, nitya Atma will start growing in you..
When you withdraw from all other things & relentlessly meditate on Atma, then you will attain AtmasAkshAtkAram
But the meaning here is attained as
श्रुति - Listening to Krishna
विप्रतिपन्न - Specially Gleaned
समाधि - Concentration of Mind
समाधीयते अस्मिन् आत्मज्ञानां इति समाधि: मन: | says tAtparya-candrika
Oh Arjuna, your mind is disturbed by various questions, arising from various quarters. When your mind withdraws from all external things & is fixated on Atma, then you will attain Yoga
At the beginning, your mind is diametrically opposite to vedas/shastra. When you develop the intellect to firmly believe in it & dismiss all dushta-vAdam(s), then a deep meditative state develops in you..