You're mom means well. What she's saying is to be thankful for what you have, and you probably are. What I think she's missing is that depression is really an illness. When the brain gets sick, some people get headaches, some get dizzy, some get forgetful, and some get depressed. Rather than use the word depressed, try telling her the symptoms. It would be great if you could see a therapist or at least talk with your doctor.