Relationships

I just finished reading "Where My Heart Belongs" by Tracie Peterson. What has stayed in my mind from this book ,that was something like the story of the prodigal son, is that I need to understand the real purpose of relationships in my life. Recently, I have basically ended a friendship for no good reason other than I wanted to keep to myself and I never stop to think what this person may have needed from me. Never thought about what our relationship meant to her just focus totally on me. Today, I feel so guilty for taking my friendship away from her just because I wanted to hid from the world. Another friend told me this past week that I need to come out of hiding and socialize, today I understand the importance of that but first I must apologize for taking away a relationship and try to build it once again.