Krishna speaks6.22

यं लब्ध्वा चापरं लाभं मन्यते नाधिकं ततः।यस्मिन्स्थितो न दुःखेन गुरुणापि विचाल्यते॥

yaṃ labdhvā cāparaṃ lābhaṃ manyate nādhikaṃ tataḥyasmin sthito na duḥkhena guruṇāpi vicālyate

Word by word
yamwhichlabdhvāhaving gainedcaandaparamany otherlābhamgainmanyateconsidersnanotadhikamgreatertataḥthan thatyasminin whichsthitaḥbeing situatednaneverduḥkhenaby sorrowguruṇā(by) the greatestapievenvicālyateis shaken

The verse says

— having got which he thinks no other gain is greater, and standing in which he is not shaken even by heavy suffering —

In plain words

The third piece, and it is the one you can test.

No other gain seems bigger. And heavy suffering does not move him.

Guruṇā api duḥkhena — even by weighty pain. The verse does not pretend the pain is light.

Where you've felt this · in sport

The old coach lost his job, his knee and most of his savings inside a decade. He is at the ground at seven every morning regardless. Something he found at nineteen has never once been taken off him.

Going deeper

The honesty of this verse is in the word heavy.

It would have been easy to say such a person is untroubled. Instead the suffering is granted its full weight — guru, heavy, the same word used for a teacher and for anything that carries mass — and the claim is only that he is not shaken loose.

That is a much more believable picture than serenity. Something can hurt entirely and still not move you off your footing, and anyone who has watched a person go through a bad year knows the difference between those two things.

And the first half is the more testable half. Not he has no other wants, but no other gain seems greater. Wants remain; the ranking has settled.

Which gives a reader something to check that does not require a crisis. When something good arrives, notice whether it reorganises everything or simply joins the day.