In the course of dealing with my anxiety, I started to notice how I felt when I was around different people. I realised it's important to limit my contact with those who ultimately stress me out, for whatever reason, whether it's that they are overly competitive with me, have a tendency to be super-negative, or don't seem to really care about how I'm feeling, or what's happening in my life. Instead, I actively seek out people who get me, or leave me feeling warm and fuzzy after we spend time together or chat on the phone.
Of course, you can't always control who you come in contact with on a daily basis, but I sure try! Here's something you can do today to this end: if you are having an upsetting conversation with a family member or friend, change the subject, or simply get off the phone (say someone's at the door!) or leave the encounter (politely) ASAP. Then call a proven positive person, and change the course of your experience.