I presume, that nothing more powerful than Dhyana-Yoga exists.
In the following Darshan Shree Shreemad SwamiNarayan grants the especially valuable notes about Dhyana-Yoga.
The Prevalence Of The Dharma Of The Yugs
9.1 In the Samvat year 1877, on Shrãvan vad 13 [5 th September, 1820], Swãmi Shree Sahajãnandji Mahãrãj walked from Sãrangpur and arrived at Kundal to please His haribhaktas.
There, He was sitting facing north on a decorated bedstead on the veranda outside the west-facing rooms of Amrã Patgar’s home.
He had tied a white pãgh around His head. He had covered Himself with a white pachhedi, and was wearing a white survãl and white angarkhu.
A sabhã of munis, as well as haribhaktas from various places, had gathered before Him.
9.2 Muktãnand Swãmi then asked, “Mahãrãj, why do the dharmas of the yugs prevail in a person’s heart?”
9.3 Shreeji Mahãrãj replied, “The dharmas of the yugs prevail because of the three gun. When pure sattva-gun is prevalent, Satya-Yug prevails in the heart.
When rajo-gun is prevalent, Tretã-Yug prevails in the heart.
When rajo-gun and tamo-gun are prevalent together, Dvãpar-Yug prevails in the heart.
Finally, when tamo-gun alone is prevalent, Kali-Yug prevails in the heart. In this way, the prevalence of the yugs is due to the gun.”
9.4 Muktãnand Swãmi asked further, “What causes the activities of the gun?”
9.5 Shreeji Mahãrãj replied, “The cause of the activities of the gun are karmas. Specifically, the type of karmas a person has performed previously, determines the gun that will prevail.
Therefore, if a person, in whom rajo-gun and tamo-gun are prevalent, attempts to perform dhyãn on Bhagvãn, he will not be able to do so.
In such situations, he should make use of the strength of ãtmã-nishthã and Bhagvãn’s greatness.
He should realise, ‘I am the ãtmã. Since I am gunãtit, there can be no mãyik influence within me’.
Furthermore, he should realise Bhagvãn’s greatness in the following way: ‘Ajãmel was a terrible sinner and yet, because of his son, he uttered the name of “Nãrãyan”.
As a result, he was freed from all his sins and attained Akshardhãm. I have attained that Bhagvãn in His pratyaksha svarup, and I chant His holy name day and night. Therefore, I am fulfilled’.
Thinking in such a way, he should always remain joyful.
9.6 “However, a person in whom rajo-gun and tamo-gun are prevalent should not insist on performing dhyãn. Instead, he should engage in bhajan and smaran as much as possible.
Moreover, he should physically serve Bhagvãn and His sant with shraddhã. At the same time, he should abide by his dharma and believe himself to be fulfilled.”
9.7 Again, Muktãnand Swãmi asked, “Kali-Yug prevails in the heart of a person who has accumulated many tãmasi karmas. Is there any method to eradicate those karmas, or not?”
9.8 Shreeji Mahãrãj answered, “If he has intense shraddhã and extremely firm faith in the words of Bhagvãn and His sant, then whatever type of tãmasi karmas he may have performed, they will be destroyed.
The dharma of Kali-Yug will also vanish, and the dharma of Satya-Yug will prevail. Therefore, if a person practices satsang with absolute honesty, then no fault will remain in his heart, and he will become brahm-rup in this very lifetime.”
9.9 Then, Svayamprakãshãnand Swãmi asked, “What can be called sthãn?”
9.10 Shreeji Mahãrãj replied, “An individual’s dharma according to the four varnas and the four ãshrams should be known as sthãn.
You are all tyãgis, but if you were to leave this ãshram and tread the path of grahasthas, then you would be known to have diverted from your sthãn.
So, even in the most difficult circumstances, or even if I were to issue an ãgnã, you should not deviate from your dharma.
Moreover, while grahasthas wish to perform my pujã by offering clothes and jewellery, you should not wish to do so.
Instead, you should offer pujã by using leaves, flowers, fruits, and water, and you should experience joy by performing this pujã.
It would not be appropriate for you to deviate from your dharma to perform pujã of Bhagvãn.
Therefore, all of you should remain within your own dharma, and offer pujã within your capacity. This is my ãgnã, so abide by it firmly.”