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.
A right step taken at a right time completely changes your identity. I won't say that your academic journey will be easy, but I am sure it will be worthy.
There are so many ways to pursue your passions and interests. I'd recommend that prospective grad students be certain that they are ready for the rigour and commitment required by graduate studies. Be open to new ideas, critiques, and other ways of seeing the world. Learn from your peers, students, university staff, and the wider community, in addition to your professors. Be generous with others and build community. Don't forget where you come from.
My best advice for prospective grad students would be to not be afraid to put yourself out there to the individuals you want to work with or those you believe to be the best sources of information. You are your best advocate! I would suggest doing as much research as possible on different graduate programs at various institutions, as well as the research being conducted to find the best fit for yourself. In my experience, asking current grad students how their experience was and how they achieved their goals was extremely helpful as they provided their authentic opinion.
Drawing on my experience in academia and research, I would advise prospective graduate students to embrace challenges. When confronted with a difficult situation, tackle it directly rather than trying to avoid it. You'll often find that the solution emerges as you delve into understanding and addressing the challenge at hand.
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.