In high school Jonas Teuwen (alumnus TU Delft) was terrible at math. But he ultimately graduated in Mathematics at TU Delft. His fascination came from the drive to understand.
Jonas now develops techniques which automatically read the scans of mammographies, to make screening a lot more efficient and faster. And hopefully recognize earlier stages of breast cancer. His advice to PhD students: go beyond the boundaries of your own lab and research, invest in your personal and professional network.