First of all, be sure to get out of the dormitory and visit the campus more. Some people in our dormitory don't leave the dormitory every day. They eat and study in bed or dormitory. If you don't go out, how can others know you and associate with you? So be sure to go out, no matter what you do, play ball, run or just take a walk.
Secondly, we must clean ourselves up. Clean yourself up, don't be sloppy every day. You don't need to be particularly delicate. Take a bath at least once a week! You have to shave when you grow a beard! And most importantly, smoke less and try not to smoke. Not everyone likes the smell of smoke, or even hates it.
Finally, freshmen must participate in more activities. Sophomore students may have many specialized courses, but they don't have that much time. But freshman year was right. You can participate in activities, which will make you know more people and have more opportunities to talk with others.