Yoga Sūtra Chapter Two verse 11

ध्यान हेयाः तद्वृत्तयः ॥११॥

dhyāna-heyāḥ tat-vṛttayaḥ ||11||

These fluctuations are overcome by meditation.

dhyāna - meditationheya - overcometat - thatvṛtti - fluctuation; turned; set in motion; profession

Commentaries and Reflections

T Krishnamacharya:

When Kleśa are on  the move, time should not be lost.
Reflection is a must.
Reduction of all the factors that increase Rajas and Tamas,
including right food, company, study and Niyama is a must.
Without them, reflection leading to a reduction of the power of Kleśa will not work.