Hi Hulk,
in Vipassana meditation there is a strong case for balancing the following 5 faculities to the effect of having them developed to full strength:
Confidence, Effort, Stilling, Mindfulness, and Wisdom (Saddha, Viriya, Samadhi, Sati + Panna).
Then there are the 7 factors of enlightenment (Sambojjhanga) which tent to a mutually inclusive development too:
Mindfulness (sati-sambojjhanga), Investigation of phenomena (dhamma-vicaya-sambojjhanga), Energy (viriya-sambojjhanga), Rapture (piti-sambojjhanga), Tranquility (passaddhi-sambojjhanga), Concentration (Samma-ditthi-sambojjhanga), Equanimity (upekkha-sambojjhanga).
On whatever occasion the monk remains focused on the body in & of itself - ardent, alert, & mindful - putting aside greed & distress with reference to the world, on that occasion his mindfulness is steady & without lapse. When his mindfulness is steady & without lapse, then mindfulness as a factor for Awakening becomes aroused. He develops it, and for him it goes to the culmination of its development.
- 'Remaining mindful in this way, he examines, analyzes, & comes to a comprehension of that quality with discernment. When he remains mindful in this way, examining, analyzing, & coming to a comprehension of that quality with discernment, then analysis of qualities as a factor for Awakening becomes aroused. He develops it, and for him it goes to the culmination of its development.
- 'In one who examines, analyzes, & comes to a comprehension of that quality with discernment, unflagging persistence is aroused. When unflagging persistence is aroused in one who examines, analyzes, & comes to a comprehension of that quality with discernment, then persistence as a factor for Awakening becomes aroused. He develops it, and for him it goes to the culmination of its development.
- 'In one whose persistence is aroused, a rapture not-of-the-flesh arises. When a rapture not-of-the-flesh arises in one whose persistence is aroused, then rapture as a factor for Awakening becomes aroused. He develops it, and for him it goes to the culmination of its development.
- 'For one who is enraptured, the body grows calm and the mind grows calm. When the body & mind of an enraptured monk grow calm, then serenity as a factor for Awakening becomes aroused. He develops it, and for him it goes to the culmination of its development.
- 'For one who is at ease - his body calmed - the mind becomes concentrated. When the mind of one who is at ease - his body calmed - becomes concentrated, then concentration as a factor for Awakening becomes aroused. He develops it, and for him it goes to the culmination of its development.
- 'He oversees the mind thus concentrated with equanimity. When he oversees the mind thus concentrated with equanimity, equanimity as a factor for Awakening becomes aroused. He develops it, and for him it goes to the culmination of its development.'
Further there is the talk of Vipassanupakkilesas - Perversions of Insight:
... during Insight practice may arise the 10 imperfections (or Defilements) of Insight: effulgence of light (obhasa), knowledge (nana), rapture (piti), tranquility (passaddhi), happiness (sukha), determination (adhimokkha), energy (paggaha), awareness (upatthana), equanimity (upekkha), delight (nikanti). - See Vis. XX, 105f.- (pp.)
- Excepting the last one, 'delight', they are not imperfections or defilements in themselves, but may become a basis for them through the arising of pride or delight or by a wrong conclusion that one of the holy Paths has been attained.
He, however, who is watchful and experienced in Insight practice, will know that these states of mind do not indicate attainment of the true Path, but are only symptoms or concomitants of Insight meditation.
All of these facettes of a rational mind - wisdom, investigation of phenomena and knowledge - have to be in balance with other faculties, that has to be clearly understood.
And there's a huge difference of such a penetrating ultimately non-conceptual quiet mind - to the hindrances of restlessness, worry and doubt.
But beside this there are also the 4 bases to spiritual power (Iddipada):
Canda: determination
Citta: concentration
Viriya: effort
Muncita: strong analytical understanding
Of which it is said that each yogi naturally brings his/her own inclination to one of them, though all of them have to be present to some extent again. But the one most pronounced will become the base to spiritual power of a yogi.
kind regards..