Seasonal depression, also known as seasonal affective disorder (SAD), is a type of depression that occurs cyclically, usually during autumn and winter. It is characterised by lowered mood, lack of energy, increased sleepiness and difficulty concentrating. In this article, we will discuss effective methods for dealing with seasonal depression that can help improve your mood and quality of life. You will learn how to use light therapy, physical activity, diet and other techniques to alleviate the symptoms of this condition.