Hello dear The above mentioned description is indicative depressive mood due to inability to achieve well in academics. It is very important to understand that academics is just one part of our life and we can work hard to achieve well in that domain as well. Try talking to your parents about the situation and consult a psychiatrist or a psychologist fr professional help. Try to schedule your day by adding adequate studying hours along with breaks to be able to perform well in academics. Try spending time with family and friends to uplift your mood.