i am sorry you are having a hard time. i have been there. are you at all spiritual? do you ever pray?
there are many reasons why you could be depressed. other than life's troubles....you could have upset chemistry. when things are in balance we can handle life better. your liver may be really conjested. this contributes a lot to Depression as does thyroid trouble. look into liver and colon cleansing. the colon is very responsible for mental health as well. you need to start cleaning yourself and eating more healthy. this will help you. after you read up on this stuff you will realize how much the liver and colon are tied to our mental health.
start looking around these forums.
i have had to do many htings to get better. i have come a long way. still have some ways to go.