About Kriyayoga (The version of Darshanyogi)
The real nature of God is Nirguna (attribute less) and Nirakara (amorphous). Even that is not proved through arguments and logical reasoning. God is realized through plunging into Him and the path that should be followed up is called Kriyayoga.
Kriyayoga is an exceptional step of prayer & worship.
There is nothing to be gained only by reading books or listening the lectures on yoga. Kriyayoga becomes a habit through real practice. So we need to a real guru (spiritual master) and have to be in touch with him, otherwise it may be harmful if there is any serious mistake happens. Everyone should be in vicinity with one’s mentor or guru to overcome the mistakes.
This Kriyayoga makes a man a great yogi. That’s why the Lord Krishna repeatedly advised ‘Arjuna’ as, Oh! “Arjuna” you become a yogi (ascetic). You will be a conglomerate of all the powers of yoga if you become a complete yogi. The stairs which one has to resort to reach that stage is actually the Kriyayoga.