Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Your problem is definitely laziness. You have to overcome it by making your studies more and more interesting. At teen age, brain is always vibrant and creative. If you are unable to give your brain the proper task which is creative and vibrant, it become lazy. Over and above, you are lacking the vision and seriousness in the studies. If you do not have interest in your subject, it is quite natural that you feel bored and sleepy. Make your subject enjoyable. Read aloud, act, rehearse, use internet, use pictures, discuss, make songs from your subject topics. There are numerous techniques to make study interesting. Do not surrender to laziness. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe some psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.