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.
I've been very privileged and lucky since coming to Guelph for my undergraduate degree back in 2010 as all of the opportunities I have been given have been gained through building strong relationships with faculty and staff on campus and finding mentors that have helped guide me along my career path. I've always found that the people on campus are incredibly giving and willing to devote their time to help out students. I've also found that simply starting with expressing an interest to be more involved and showing initiative can go a very long way to opening doors to new opportunities.
Words of wisdom for someone considering grad school...
My advice would be to not be afraid to try anything. Take any opportunities you have for new experiences because you never know what you will end up liking! If I had not tried a wide variety of courses during my time at the University of Guelph, I would not have discovered my interest in reproductive biology. Also, take any opportunity you can to speak with other graduate students; everyone is extremely friendly and always willing to lend a hand if you need it. Your peers are a great resource and are always willing to offer some advice on school, research, or life.
We have AMAZING faculty for cardiovascular research, as well as nutrition, exercise and food science. If you're trying to choose universities and advisors, come drop by Guelph- chat to the professors, other lab members, our support staff. You'll see the difference yourself and be able to make an informed decision!
Guelph is an amazing school academically and socially. You will be able to conduct cutting-edge research, surrounded by people who passionate, intelligent and supportive. There are so many social events and opportunities so don't be nervous to join clubs, teams or come out to social events!
Being a graduate student at U of G is a wonderful opportunity. There is a fantastic support system here to help you progress and succeed in research, made up of faculty, support staff and other graduate students.
Identify your passion and reason(s) for wanting to become a graduate student. Write them down, type it up, post it large and visibly on your desk or wherever you do your work so that it remains a constant reminder of why you are doing what you are doing and will motivate you through the hard times that every graduate student has and does go through, so that you can always see the light at the end of the tunnel.
Do your research: on the lab, on the faculty, on the department and on the city itself. There are so many different programs/departments and it's imperative you know what you're getting into. Speak to students that are currently in the lab or have recently graduated to get an idea of how things work. There are going to be some tough times in your program and you want to make sure you're surrounded by people that want to support you and help you get through, to be successful.