If you suffer from depression let me reassure you that you're not alone. That lovely silver ribbon is a symbol of awareness for those who are fighting possibly one of the most common yet most silent afflictions in America.
I encourage anyone fighting in darkness to step out into the light and seek help. HERE and HERE are some online support groups.
Take some time to learn about what you're going through. HERE is webmd's page on depression. There are many helpful resources here including a Depression Health Check.