Indirect Account Manager
It's like many things in life, the more you put into it, the more you get out. Immerse yourself in all that you can do. Not only does it help you socially, it provides you connections and referrals for many years to come. Getting myself in a fraternity gave me a large support system in college as well as after. This also led me to working with the Interfraternity Council, where I really saw the "big picture".
No matter if a fraternity or sorority isn't for you, there are lots of clubs to join on college campuses that can provide you the same support system. These are all great places to learn leadership and working well with others toward a common goal.
Most professors are very open to discussions and help. If they see you reaching out, they know you are trying and that will go a long way. Never know when they may end up being a referral also.
Trust me, after college I went through a period when I was bored. I just went to work and home. It was because I missed being involved and being on the go. This lead me to becoming more involved as an alumni for my fraternity at my alma mater as well as others.