  Workload often triggers anxiety for office workers. While a variety of stress
intervention and management techniques have been explored, there exist only a
few of portable tangible interfaces for anxiety reduction. Contributing to the
body of work, we introduce Self-Assistant, a portable anxiety intervention
training interface. This is based on progressive muscle relaxation training
which is an effective way for reducing stress and raise awareness of tension,
and provide feelings of deep relaxation. This interface incorporates a stress
ball with a pressure sensor and visual indicators which help track the user's
anxiety level through squeeze actions. This is designed to help improve
self-awareness of anxiety and stress, in turn self-regulating bodily functions,
offering rapid and low-sensory stimulus training for anxiety relief. Finally,
we discuss application scenarios and future work with Self-Assistant.
