When we don’t have sufficient information about what is happening around us, we create meaning. The problem is…this meaning is largely negative. We personalize events and other peoples reactions, interpreting them as responding to us when they aren’t. For example, we decide a person is judgmental because they are frowning while we talk, when we are actually missing the fact that this person always frowns when they are listening carefully. We make us a story that they dislike us, which makes us afraid of them. Why? Because negative facts make a stronger impression on us than positive or neutral ones. 

From a nice little book – Leah Weiss, The Little Book of Bhavana