My philosophy in med school was to enjoy life before I am too old and busy to not enjoy it. Accordingly, I learned, watched netflix, hung out with friends, drank, studied, traveled, and didn't aim for top scores in everything. Passed each class, no failures, and I'm pretty sure I'm in the bottom 10% of my class.
I have more than enough interviews for residency, in which each interviewer asked me about my hobbies and noted how easy I am to converse with, which I attribute to not being a shut-in med student for 4 years. My grades and class rank never came up. I'll probably be a doctor, the same occupation as the guy who studied extremely hard for 4 years.
Its your life, choose what is important for you. For some people, it may be gunning for that A in Biochem 1, for others, it might be traveling internationally during your vacation month. Either way, you'll be a doctor.