Relationships are ultimately the most important thing in making your life rich and fulfilling, not necessarily romantic or physical ones - more like family, social, professional, and even online relationships. I've been fortunate mostly in my online, social, and romantic relationships because I've made good close friends with people I know I can trust and also who share some of my interests.
Professional is something I'm working on because getting back into the working world is a tough transition from going to school and just goofing off at home or hanging out with friends. Being in a work environment is very different for me from when I started in college and re-connecting with people is always very exciting. True friends are definitely the most important people to have in your life.
I would have a difficult time in my life if I hadn't had good friends I've made over the years in various areas of my life. I do my best to value those I've reached out to and those who've reached out to me, and it's really helped me to become a better more focused and less selfish person. Caring for others is a great thing because the people who really matter to you need your help the most.