योऽयं योगस्त्वया प्रोक्तः साम्येन मधुसूदन।एतस्याहं न पश्यामि चञ्चलत्वात् स्थितिं स्थिराम्॥
yo ’yaṃ yogas tvayā proktaḥ sāmyena madhusūdanaetasyāhaṃ na paśyāmi cañcalatvāt sthitiṃ sthirām
Word by word
The verse says
Arjuna said: This practice you have described as evenness, Krishna — I do not see any firm standing for it, because of restlessness.
In plain words
Arjuna interrupts, and the objection is not a quibble.
He is not saying the teaching is wrong. He is saying he cannot see where a person would stand to do it.
Sthitiṁ sthirām — a steady standing. He has looked for one and cannot find it.
Where you've felt this · in study
The method your teacher describes is obviously correct and obviously works. You have tried it four separate times. You have never once got past the second week.
Going deeper
The objection is well made and it deserves to be taken as seriously as the book takes it.
Krishna has just finished thirty-two verses of instruction, ending on a summit: seeing everyone as yourself. Arjuna's reply is not about whether any of that is true. It is about whether there is any surface to stand on while attempting it.
That is the difference between disagreeing with a teaching and being unable to begin it, and only the second one is a real problem.
And it is worth noticing who is speaking. This is the best archer of his generation, a man whose whole life is trained attention. If anybody in the story had grounds to say this should be manageable, it is him.
He says the opposite. Whatever comes next cannot be dismissed as advice for people who have not really tried.