Bhagavad Gita, Chapter 18, Verse 51-53

Endued with a pure intellect, subduing the body and the senses with fortitude, relinquishing sound and such other sense-objects, abandoning attraction and hatred; resorting to a sequestered spot, eating but little, body, speech and mind controlled, ever engaged in meditation and concentration, possessed of dispassion; forsaking egoism, power, pride, lust, wrath and property, freed from the notion of mine, and tranquil, he is fit for becoming Brahman.

A real, long checklist is given here for what actually qualifies someone for this level of realization, reaching all the way down to ordinary daily habits, how much someone eats, how they speak, before closing on what has to be fully gone, egotism, violence, arrogance.

Purified intellect, restrained senses, and freedom from attraction and aversion are named as real, specific starting conditions, and solitude and light eating sit right alongside meditation and dispassion, showing this reaches into real, practical daily choices too. Krishna names complete freedom from ego and pride as the real requirement, with tranquility shown as the natural result, not a separate additional step.