Jannik Goetz develops a treatment concept for sufferers of Seasonal Affective Disorder, commonly known as winter depression. Unlike existing solutions that focus on medical remission only, the author aims at creating a user experience that is alleviating symptoms of this disease in a motivating and hassle-free way. By utilizing a variety of research techniques, the author gains valuable user-driven insights that are directly transformed into a novel approach to light therapy. The result is a light lamp that resolves shortcomings and issues of current treatment approaches. A business plan and its associated requirements complement the overall concept.