If its not internet, its tv, if its not tv its sleeping, if its not sleeping its music, and so on, i have read that procrastination is caused because your mind tries to escape some kind of pain and then tries to replace it by pleasure, so try to get rid of that perception of pain related to doing that task, i recommend you to try EFT with your procrastination problem
EFT Provides Impressive Health and Emotional Freedom--New Discovery Often Works Where Nothing Else it worked for me. Good luck.