Answer the question you selected for profile question 3 here (300 words):
The most important piece of advice for any student looking to pursue a career in science is to find something you are passionate about. Whatever you do, you should be able to eat, drink, and breathe it. Not that you have to make it your life, but good science can't really be done when you have to drag yourself out of bed every morning to do it. The best science is from people who really engage with it, who think about it all the time, who have a personal motivation to answering those questions that have not yet been answered. Whether that be in particle physics to global ecology, passion takes you further in science than any other trait.
You also have to know your field. This is where passion helps, because you have to have the drive to learn more. Study your field deeper than your textbooks currently take you. Seek out the knowledge you don't have. Connect with people in the field you want to go into, so that you can pick their brain when you can't find an answer. Once you discover what you are passionate about, don't just stop there. Understand what about it interests you and what you and the scientific community as a whole needs to know more about. If you can do that, you are already a scientist.