Volunteering and trying out different career experiences is essential to knowing what you like/what you are good at. I often volunteer my time to entomological societies or writing blog posts for the public so I can gain more skills in scientific communication. Practicing your skills is what helps build them up.
My advice for someone who would like to follow in my footsteps is that if you have a passion, have the science mould around your passion as opposed to moulding your passion around the science. For example, my main passion in science is aquatic Species at Risk conservation and ecology, while prior to my thesis I had no interest in molecular biology. It was only when my passion could only be obtained through the lens of molecular biology that DNA became exciting to me!
Also, I recommend one to take every opportunity as it presents itself and to continuously seek out new opportunities. Every relevant job, course, and volunteer work that I have had in my academic career has provided connections and experience for the next opportunity. If you work hard and are passionate about what you do, your day job feels a lot less like work ;)
I heard this quote when I first started my Master's: "Your project at the end is not going to be the same as when you started". Although your overall deliverables/outcomes might stay the same, how it gets done is very likely to shift. Those who are adaptive to change, take proactive measures to complete tasks timely, and are willing to go outside of their comfort zone will be the most resilient.
From my experience as an international student, I would request every prospective grad student to understand the core details offered by every course in the food safety and quality assurance program. I know every course is research-intensive and requires dedication and time management, but trust me, if you are passionate to establish yourself in the industry and want to ensure consistent delivery of safe food to the customers, you will develop a strong interest in the course. The application-level offered in the assignments is a reflection of how it is applied in an industrial setting and helps you crack the real-life hurdles faced in the rapidly growing industry and globalization. I would also suggest the prospective graduate students engage themselves in thoughtful conversations with their peers and develop a strong sense of food safety leadership to facilitate those conversations. It is also highly recommended to attend the food safety seminars provided by the department.
Pursue research that you are passionate about and that inspires you. Graduate studies are a lot of work and can be difficult, and if you're not passionate about your research then you probably won't enjoy it. That being said, don't be afraid to step out of your comfort zone and experience new things, whether that be academically or personally. Also, don't be afraid to get involved, some of my greatest experiences at the University of Guelph have been outside of the classroom.