Being a graduate student was a great experience! UofG supports its students in making the program accessible to people of all capacities. I found myself engaging with people from different countries, stages of life, and experience. I really loved the different perspectives that was brought to my classes each week since the people in my program came from all walks of life.
Find what interests you. Many other grad students are much younger than I am and will be entering a life's career following completion of their studies. Looking back, I think it's important to pursue your passion and let the career, money, etc., come from that. During studies, stay on top of things. At the same time, don't neglect other outlets, pursuits, interests: things have a way of connecting in unexpected ways.
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.
Professors at the University of Guelph are exemplary in their professional acumen. Over and above this, there are plenty of opportunities, like Teaching Assistantship (GTA) and Research Assistantship (RA), for an international graduate student to help fund their studies.
While it's true that you should work hard to reach your goal, burnout is real. Allow yourself to take breaks when needed; take a nap, play video games, and laugh at some memes. Life will feel less annoying.
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.
If you come to Guelph, your program will be full of like-minded students who have the same passion that you do for your research. The environment you will be in is the most supportive environment you can have for when you are pursuing something that you love.
Be patient with yourself. As a student your job is to learn, and by necessity, fail. Solving the problem and having the right answer isn't always the same thing.