It's true that we should take responsibility for our actions and lifestyle, however, it's unfair to hold Nikhil's essay to such an extreme standard. Nikhil was simply attempting to express a genuine feeling, which everyone can relate to. We all know how it feels when an especially clever thought enters our mind, only to disappear just as quickly as it came. It's a part of the human experience, and it doesn't require us to consider our much larger responsibilities for our health and mental well-being.
Nikhil's hypothetical exchange between him and his brain was certainly comical, but he wasn't suggesting that we should all go around berating our brains into submission. The key point of the essay wasn't that the brain is a master to be feared or obeyed, but rather that we are inextricably linked with our minds. We learn, grow, and explore together, and sometimes our thoughts come and go to places beyond our control. UrRong to suggest that Nikhil was speaking literally when all he was doing was speaking figuratively.
To suggest that Nikhil was wrong is missing the larger message in his essay: regardless of the power of the brain, it's only a part of us. If a thought slips away and can no longer be remembered, thankfully we can always find something new to think about and create. A blank stare doesn't have to be the end of something; it can often be the beginning of something more!