Carolyn Ainscough said this quote
“ Depression can be a very disturbing and frightening experience. People often feel that depression descends upon them from nowhere and feel powerless to understand or change how they are feeling. It can physical changes such as tiredness and loss of appetite but depresson is not primarily a physical problem. Depression is routed in people's past experiences, their thoughts and feelings about themselves and the world, and the ways they have learned to cope. ”