Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Your nephew is 12 years and soon he will enter adolescent period. During this age bracken children concentrate more on playing or other things which gives them pleasure. He is a child. Children do behave childishly. He do understand elders, but don t obey them, because elders always try to push something onto him. That is the way these children thinks. He needs to get more matured. Maturity comes with age and experience. Please wait and he shall be alright. For the studying matter, he should be made to understand that the studies are important. He will not listen to you if you try to advice him. Appreciate him and motivate him whenever he does good academically. Even increase of one mark should be appreciated. Let him know his worth. Take the help of his parents also. They should also appreciate him without fail. For more psychotherapy techniques relate to educational psychology, You can post a direct question to me in this website. Include every detail as much as you can. I shall prescribe some psychotherapy techniques to control your condition. I am sure that the techniques should be a success. Hope this answers your query. Available for further clarifications. Good luck.