dhyana (ध्यान, dhyāna) = meditation, contemplation
heyah (हेयाः, heyāḥ) = (nom. pl. m. from heyah (हेयः, heyaḥ)) to avoid; to overcome
tad (तद्, tad) = whose; these
vrittayah (वृत्तयः, vṛttayaḥ) = (from vritti (वृत्ति, vṛtti)) thought waves; waves; chitta turbidity

Klesha (क्लेश, Kleśa) a specific type of vritti (वृत्ति, vṛtti)

Klesha (क्लेश, Kleśa) is a specific type of vritti (वृत्ति, vṛtti) i.e. oneness comprising the physical body, energy, emotion and thought. This manifestation alters our perceptions in the same way that a misconception does [YS I.2-4]. According to Patanjali (पतञ्जलि, Patañjali), dhyana – a form of quiet chontemplation or meditation (ध्यान – अ fओर्म् ओf qउइएत् चोन्तेम्प्लतिओन् ओर् मेदिततिओन्, dhyāna – a form of quiet contemplation or meditation) is the best way to overcome Klesha (क्लेश, Kleśa).

Whenever I observe Klesha (क्लेश, Kleśa) in myself, I simply apply Patanjali (पतञ्जलि, Patañjali)’s advice by taking a brief time out to plumb my own depths. This process of self observation quickly brings be back to my center, and I realize that I am full of happiness and joy, regardless of my outer circumstances. Thus whatever action I take in my life, whether it’s buying a bicycle, relocating to a new apartment, or changing jobs, stems from this inner strength that is rooted in the knowledge that I will feel joy and contentment no matter which decision I make. I never make a decision when in a state of need or expectation.