you need to shift your attitude from coursework student to researcher.
In particular, you need to shift your attitude from being a sprinter to being a mid-distance runner. A mid-distance runner maintains a moderate but steady pace, even holding back a little to conserve energy, then picks up speed towards the end.
From the start, strive to be independent, resilient, and productive, and learn to work at a sustained high level of activity.
Sejak awal, berusahalah untuk mandiri, ulet, dan produktif, dan belajar untuk bekerja pada aktivitas tingkat tinggi yang berkelanjutan.
I'm kind of relieved today because I finally decided that I'll be studying more of combinatorics and algebraic geometry for my masters thesis and hopefully for my PhD as well.