Anxiety can be defined as an unpleasant state of mental uneasiness or concern that causes physical and psychological discomfort. In this paper, we describe an interactive robot-based platform that is designed to be used to support of person with anxiety traits and states using non-medical treatments including mindfulness, relaxation, and muscle relaxation therapy. We describe CAKNA, whose design is based on theories in anxiety traits and states, social robots, and therapies, along with the results of a pilot study (with 24 respondents) exploring the effectiveness of our robot to support individuals with anxiety.