Everyone is different, but there are some common symptoms of depression:
I stopped: sleeping well; going out; calling anyone or answering the phone; going to the gym; baking (which I love) and reading.
I started: eating poorly; listening to people who were trying to help (my boss, my family doctor, my therapist, my spouse); getting excruciating phantom nerve pain and feeling helpless and stuck; jumping from one thing to the next and finding easy tasks overwhelming; crying and feeling hopeless and all the time wondering how everyone else seemed to have it all together.
I finally ended up in the adult mental health ward of the hospital--after my spouse pleaded with the ER doctor to send in a crisis worker instead of sending me home. I stayed for 18 days-- surrounded by people who wanted to help and support me. They removed some of the weight I was carrying and launched a lifeline of support to shore me up and keep me safe---from hurting myself, or anyone else.