I think a Graduate program is filled with opportunities for self-growth and self-improvement in a facet of skills, including research, academics, management, teaching, mentorship, public speaking, and networking. On top of that, it exposes you to a variety of workplaces including academia, research and development, industry, and government.
Most importantly, I believe it's not easy to do a graduate program and many others will agree. There will be many challenges and struggles throughout it but this is a normal part of your program and part of the beauty of science and research! I suggest to keep your mind open and find the opportunity in every situation, because your graduate program will only help you improve yourself both personally and professionally!
Networking is essential when considering graduate studies. I met my research advisor at an informal chemistry meet-up in Brass Taps two years prior to working for him. You'll never know when opportunities present themselves, so it's important to take chances and meet everyone you can.
Workshops offered through the library and OpenEd are so beneficial to help with your research goals and teaching tips/tricks. Definitely be sure to check these out!
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.
Grad school opens doors! SO many doors were opened up for me just in the last two years of my degree.
Make sure you choose an adviser who is well-known in the industry because they will help you grow quickly in the field. I saw my adviser as a professional mentor and I'm able to go to her with questions about the industry. She has given me so much insight into the future of our professional field which has helped shape my future career goals. Take advantage of all the mentorship opportunities that you can. Grad school is the BEST place for that! Finding mentors when you're not a student is hard. Being a student is a great excuse to find mentors who will be so strategically useful to you, if you take advantage of your time here!
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.