I think you have to come up with a system for yourself so you can correct your getting distracted easily. Write a task on a file card and put it in front of you and refer to it every X minutes; set a kitchen timer to go off every 10 minutes to remind you to refocus. Create checkback sheets so you have to make a checkmark after you do "each" problem you want to do and then are immediately focused on the next one. Make rules for yourself so you are not allowed to get up or go elsewhere on the computer besides your school/work for a certain period of time, etc. It's your life, no one else is going to be there all the time to care what you do. If you want to work at your school work, figure out a way to get what you want.