BG 6.36
असंयतात्मना योगो दुष्प्राप इति मे मतिः ।
वश्यात्मना तु यतता शक्योऽवाप्तुमुपायतः ॥
वश्यात्मना तु यतता शक्योऽवाप्तुमुपायतः ॥
asaṁyatātmanā yogo duṣprāpa iti me matiḥ
vaśyātmanā tu yatatā śakyo ’vāptum upāyataḥ
vaśyātmanā tu yatatā śakyo ’vāptum upāyataḥ
Word-for-word meanings
yogaḥ — yoga; duṣprāpaḥ — [is] difficult to attain; ātmanā — for a person whose mind; asaṁyata — is uncontrolled; iti — such [is]; me — My; matiḥ — opinion; tu — but; śakyaḥ — it is possible; avāptum — to attain; ātmanā — by one whose mind; vaśya — is controlled; yatatā — [and] who strives; upāyataḥ — through proper means.
Translation
In My opinion, yoga is difficult to attain for a person of uncontrolled mind. But it is attainable by one whose mind is under control and who strives through the proper means.