Sometimes (in life at least once) all of us feel sad, miserable and fed up. These feelings are normal reactions to events that are upsetting or stressful. But sometimes we may feel sad even with no (known) reason at all – but this sadness passes by. There are people who do not find quick relief, they are really suffering from depression. In their case sadness persists for weeks and months, which has serious effects on their their day to day lives. Depression is not the same for everyone, it can be manifested in many different ways.