Before Stepping into Sophomore Year

Wow, it is quite amazing that time runs as fast as the speed of light! Now, I have finished my freshman year and gonna be a sophomore.
Before stepping into sophomore year, I want to share some of my freshman experience with you guys.
1. Don't believe you know anything and will do well when you take a course that is familiar to you. I know many guys who am quite good at math and they are quite sure that they will get A in that course. However, they never go to math classes and are quite lazy to do the homework. What happen to them at the end of the semester? None of them get A in that course. Therefore, we can not be overly self-confident all the time. We need to finish our jobs steps by steps.
2. Don't be afraid of the changes. At the end of the first semester, I decided to change my major from BMS to CBE. Before I changed my major, I was quite ambiguous on whether to change my major or not because I was quite afraid of the changes at the time. However, I changed at last (I don't want to expand to talk about what motivated me to transcend the fear of the change). After I changed my major, it turned out that the change brought me a lot of advantages, such as the eg course which helped me improve my public communications. Changes may not be a bad thing. Try to put your fear away and accept the changes.
3. Don't always focus on the study, go around to enjoy the other cultures of America, or even find a internship to get some experience for your social life.
4. Don't always consider you are the best in the world. Whatever honor awards you have gotten, you are still just a common people! Whatever deep divide lies besides you and others, you better use tolerance to patch the divide.