Welcome Panda-I agree with others that you are not stupid or lazy-a good place to start would be to see an MD & have labs done-many girls your age can have a thyroid problem which is easily corrected with medication-if it is depression there are a lot of different things you can do-If you have a close family member or teacher/counselor at school it would probably make you feel better to reach out & let them know how bad you actually feel. I know how hard it is when you feel like this-everything seems like such an effort but keep posting here-there is a lot of support available. Take care