Although I think most prospective grad students have been told about the importance of picking a study/project that interests you, I think it's also really important to take some time to see how you interact with your supervisor and lab. These will be the people you work the closest with for the next several years, and help provide support to you in some of your toughest moments.
Undergraduate research opportunities come highly recommended as they offer individuals a direct glimpse into the world of research and academia, allowing them to evaluate their own inclinations towards this field. Pursuing a PhD is not a path suited for everyone. A fourth-year project can serve as a litmus test to determine if this path aligns with one's aspirations. If it doesn't, one can easily leave without further commitment. However, if it resonates, exploring the possibility of joining a research group that fosters a strong connection becomes crucial. While enjoying the research itself is important, equally important is finding enjoyment in the people one works with, particularly their principal investigator.
This is a program that is very responsive to student needs, so if you have a question or want to pursue a line of discussion, be sure to ask! There is a considerable commitment to participants' career and personal growth, as well as to the more formal education elements. I appreciated that "all-around" approach.
I believe that one of the keys to success in terms of graduate studies and beyond is to be passionate about your work; this makes the dedication required to do well come that much easier.
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.
Grad school is demanding, but it's also an incredible opportunity for intellectual growth and discovery. Be prepared to work hard, face setbacks, and constantly learn. Find your passion. A strong foundation in your area of interest will fuel your motivation throughout the programme. Seek guidance, embrace the journey, and remember that your path is unique.