I also went to graduate school in The Netherlands, studying Space Systems Engineering at TU Delft. The article does a good job at describing what the student life is like there and common pitfalls that will set you back. The ideas are good, and work great for the author, but they are better generalized as "fall in love with the process" [0]. He found ways to fall in love with the process of graduate school, primarily by finding a morning routine that he enjoyed. Just buying the things in the referral links is misguided. It is better to find ways that make YOU enjoy your daily routine more while on the path to mastery (in his case a PhD).
[0] https://www.amazon.com/Mastery-Keys-Success-Long-Term-Fulfil...