You ll have to detach yourself from your surroun dings and reflect on your goals of life to concentrate. Often things at home or in your personal life will be such that are not conducive of a peaceful and healthy environment. But its our perception that makes a lot of difference. Our perception effects our emotions n feelins about everything around us, which further effects our behavior. See this situation as an opportunity for growth. To study well despite of difficulties and succeed.

I understand your distressful situation. You seem to be suffering from adjustment problems with few depressive symptoms including concentration difficulties. However more clarity is needed regarding your problem. It is unclear what negative atmosphere you have mentioned. Information regarding your sleep, hunger, energy levels and interests would be more helpful to decide on the severity of your condition. It is easily manageable with appropriate treatment, so that dysfunction due to the same can be reduced and your quality of life will improve. Some counselling sessions and if needed medical help might be useful for you. I would also be more than happy to help you with that if you are looking for online assistance. Discussions will be held confidential. You can directly consult with me through Practo as needed. Online chat consultation is also available.