1. Find a place where you go only to study. It should be quiet area .Identify your distractions. Find ways to decrease them or to postpone them until study breaks e.g., taking the phone off the hook, turning off Whatapps. If using a computer, exit out of email and messengers.
2. Always sit straight in a chair at a desk, start out with questions about the material, outline chapters, underline key phrases after reading section, write notes in margins, ask yourself what you have learned.Take good notes of the chapter and revise them also.If you have difficulty understanding any thing ,search it in other books and internet. If it is not resolved,write it down to discuss with Friends and teacher
3) Doing a big task may seems to be impossible to you. So Divide your work into smaller manageable tasks that can be completed in a short period of time. First Push yourself to complete one small task, then move on to the next task. Focus on one small task at a time.