Yea, college is not difficult. If you keep up with your lectures weekly and not try to cram before any test then you will do fine.
Pre-med is not hard. The hardest class will be like anatomy or organic chem. Why? there is alot of info, but it isnt hard. The people in your class will whine about it because it is so much more info than your freshman year gave off.
This doesn't mean you have to go nuts every day right after class and go to the library and stay there for 8 hours. Hell no! Thats stupid. Review your notes nightly. Take friday night off. Study saturday and review sunday. Double up before exams and you won't make below a B.
But HEED THESE WORDS: Any med student will agree with me on this. Do not half ass your classes. Actually try to learn the information. Over the first three years of college, you will learn all of the material needed that is required to score decent on the MCAT. If you just get by on test, memorize but not learn the info, then studying and retaining for the MCAT will be much harder for you. If you look up the MCAT study materials they will all say "MCAT REVIEW" It's a review, not a teaching textbook to replace a teacher.
You can have a 4.0 at your school. But this doesn't mean jack squat if you score poorly on the MCAT.
(PS: If you don't know what the MCAT is, it is a standardized test you have to take your junior year that ALL US med schools require. You must score really good on it regardless of GPA)
Best advice: Just keep up with your studies. If you do bad on a test/assignment, shake it off. A buddy of mine got a 30 on his first Physics test. He came back in the end with a 90.1 average with no bonus or extra credit. It is how you finish the semester, not necessarily how you start. If you start bad, you can pull it up.
Also, Don't become a gunner. Do not refuse to help your classmates or lie to them just to "Get ahead in class". This is not how you get into med school. Be kind to others. They are going through the same hell you are. When you least expect it, you will need some help.
Sorry for the long reply.
If you need any other adivce, let me know. I just got into Med School, so I know a few things by trial and error.