The two verses
ध्यायतो विषयान्पुंसः सङ्गस्तेषूपजायते।
सङ्गात् संजायते कामः कामात्क्रोधोऽभिजायते।।2.62।।dhyāyato viṣayānpuṁsaḥ saṅgasteṣūpajāyate
saṅgāt saṁjāyate kāmaḥ kāmātkrodho’bhijāyate
When one thinks of objects, attachment to them arises; from attachment, desire is born; from desire, anger arises.
क्रोधाद्भवति संमोहः संमोहात्स्मृतिविभ्रमः।
स्मृतिभ्रंशाद् बुद्धिनाशो बुद्धिनाशात्प्रणश्यति।।2.63।।krodhādbhavati saṁmohaḥ saṁmohātsmṛtivibhramaḥ
smṛtibhraṁśād buddhināśo buddhināśātpraṇaśyati
Anger leads to delusion, which causes loss of memory; this, in turn, leads to the destruction of discrimination, resulting in destruction.
Translation: Swami Sivananda, as given in the Gītā reader.
The chain, in plain words
Contemplating sense-objects, a person develops attachment to them.
From attachment, desire is born.
From desire, when desire is frustrated, anger is born.
From anger comes delusion.
From delusion comes the disturbance of memory.
From disturbance of memory comes the destruction of intellect.
From the destruction of intellect, one is destroyed.
Eight stages, chained.
This is rumination.
What is done with this in a session
Most rumination-targeted interventions in the modern literature start at stage three or four. BG 2.62-63 says the intervention point is stage one. Dhyāyato viṣayān — when a person is contemplating a sense object. Before attachment forms. Before desire arises. Before frustration produces the cognitive collapse. Distraction, in the Gītā’s terms, is a stage-one re-contemplation: you swap one sense-object for another, but you are still in stage one of the cascade, still vulnerable to attachment, still producing the next link in the chain. Japa is something else. It is a substitution that does not feed the cascade. There is a 2,000-year-old sequence that says rumination begins with a contemplation that has not yet become an attachment. The intervention is to act before that boundary is crossed.