Try to set some goals for yourself, don't be idle. If you are an undergraduate, you can sort out your hobbies in advance and then make a plan. You can read more books and take part in outdoor activities when you are free. If you are an interested and capable junior college student, you can go to the student union to mix. If you are a little thick-skinned, you can usually find a senior teacher to do important things. Generally speaking, you can do more mixed-up things and have a bright future. You can take some certificates related to your major after your sophomore year, which will be useful for your graduation practice.