Every productive person has a system for getting things done. What works for Uday Kotak may not necessarily work for you. After years of using different systems and writing about them, I can say that there is no one-size-fits-all productivity system.
There are good guidelines and high-level principles that are universal, but you alone can define and refine what works for you.
When your system makes you feel comfortable and confident that your productivity bases are covered, and it has a track record of actually helping you do your work without missing anything important, stick to it.
If you try a system and it doesn’t work for you, it doesn’t mean the system is broken. It just doesn’t fit you. Move on. Try something else. Focus on the results, not the system.
All of the systems are designed to do one thing: get stuff done. Once you try a system for at least thirty days, you’re free to stick with it or try something different.
Once you settle into your system, you need to customize it. Make it your own. Your situation is different from Anand Mahindra, Ratan Tata or a Sonal Pathak. You have unique needs for your specific situation.
There is no perfect productivity system. Experiment and find out what works for you, and gives you the greatest return for your time, energy, and attention.