Bhagavad Gita 9.34
Fix your mind on Me, devote yourself to Me, sacrifice for Me, surrender to Me, make Me the object of your aspirations, and you shall assuredly become one with Me, Who am your own Self.
मन्मना भव मद्भक्तो मद्याजी मां नमस्कुरु।
मामेवैष्यसि युक्त्वैवमात्मानं मत्परायणः॥manmanā bhava madbhakto madyājī māṃ namaskuru|
māmevaiṣyasi yuktvaivamātmānaṃ matparāyaṇaḥ||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).