All material experience and discriminative thinking is thrown away after taking shelter in Guru

 (from "The Near and the Dear" by Dada Mukherji):

Dada Mukherji: I spent much time in the company of these two devotees [Ayodhya Nath and Sultan Singh], hearing them relate whatever was stored in the heart. I saw their intoxication - God intoxication. Both were old and had been wise and experienced administrators. They leaned in their jobs the skillful use of mind and intellect and the proper control of emotions and sentiments. But in talking of Babaji, all that experience was thrown overboard. I cherish their experiences and intoxications, and recalling them always brings a taste of it.

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Vira Chandra: In this world, you need to play a role properly, you need to use your discriminative thinking and intellect while doing daily activities in family and work. During that, of course, you cannot always follow the instructions of other people, and it is impossible to always refrain from criticizing anyone for the mistakes one makes in his or her work. 

But there is one place where you must follow the orders without any deliberation; one place where it is necessary to completely refrain from finding errors, and where there should be no criticism or discretion, completely throwing away your external "mundane form". You cannot allow your head to bow to the feet of all people, but there is one place where you must bow your head without any delay. Why should you again have doubts and look for faults in Him, at whose feet you once surrendered, saying: “O Guruji! From now on, I'm yours!" 

I've spent my whole life carrying this burden of doubt! Since I was born, I have discerned: “This is good, this is not good; this way is good, this way is bad,” and I have never found escape from the clutches of this discriminating mindset. Because of all these doubts, I wanted to go to the left, but then someone came and grabbed my neck, forcibly pushing me to the right side. I sincerely thought that this trying to arrange everything by myself would succeed, but everything has gone wrong! I have not come to any definitive conclusions and realizations so far thanks to my own speculations and efforts. Having failed at this, I ended up offering the full weight of my discriminating thinking at your feet, saying, "O Guruji, do whatever You want with me! Please make me your pure instrument!"  So, with a sigh of relief, I survived. Now, why should I start thinking and discriminating about You again? If I start doing this, then where will I go? The life of one who begins to discriminate again, having already come to the Guru, is truly miserable...