The only thing the disciple should do is remembering Guru and the Guru mantra all the time. That is sufficient.

Yogi Ramsuratkumar

(from "Amarakavyam - Biography of Yogi Ramsuratkumar"):  

In the next day, Murugeshji was practicing pranayama, sitting under the western side of the punnai tree, from where he was not visible to Yogi. Yogi was lying down on his mat. Suddenly Yogi got up and was looking for Murugeshji. He could not see Murugeshji. Yogi asked where Murugeshji was. Murugeshji immediately responded, came out from his place. Yogi asked what he was doing. Murugeshji responded that he was attempting to do pranayama. Yogi became very serious and asked, “Who asked you to do pranayama?” Murugeshji was bewildered on seeing the anger of Yogi and told that Swami Ramthirtha in his book mentioned about pranayama.

Yogi said, “People should do pranayama under the guidance of a Guru, at a proper place. Otherwise it will not yield the required result. It will only produce negative result which will cause severe setback in one’s system”. Yogi paused for sometime and said again with all compassion, “Murugeshji, my King, all your tapas and efforts will take you to your Guru’s feet. Thereafter you need not bother about your spiritual growth. The Guru will take care of you. The guru will see that you reach God. Even if you want to escape from the Guru, the Guru will not leave you. Like a frog in the mouth of a cobra, the disciple cannot escape from Guru. The only thing the disciple should do is remembering Guru and the Guru mantra all the time. That is sufficient. Don’t try to practice any method to reach God. Remember your Guru, Murugeshji. That’s enough”. 

After pausing for a few minutes, Yogi again started talking, “Murugeshji, whatever happens, happens by the will of my Father. So nothing is wrong, Murugeshji. Everything is perfectly all right. My Father cannot commit any mistake. So, nothing is wrong, Murugeshji! Have faith in my Father. Have faith in my Father’s name. This name Yogi Ramsuratkumar is not this dirty beggar’s name. This is my Father’s name. Remember this name. That is enough, Murugeshji”. Murugeshji shed tears and slowly started chanting, “Yogi Ramasuratkumara, Jaya Guru, Jaya Guru, Jaya Guru Raya”. Everybody assembled there followed him, chanting the holy mantra with Murugeshji. The whole atmosphere was heavily charged with divinity and everybody there, felt it. Yogi was glowing with divine brilliance.