Don't send large files unless you know the recipient really wants them. Understand and practice the doctrine of fair use. Having a copy of something doesn't mean that you have the right to copy or distribute it. Do not post or share significant sections of copyrighted material. Use from others as you would have them use from you.
Addiction Take a break from being online every hour.
Read a book, eat a meal, go outside, do your homework. Conserve your disk space and control your flow. If downloading a file is going to give you enough time to weave a small rug, forget it. Concentrate on tool use rather than the tools themselves. Don't get caught downloading and fooling around with a myriad of programs when you should be working on your English paper.