self-regulation

Which of the following sentences is acceptable?

1. In the thriving Internet era, students should develope good habits when surfing the Internet, finding the reasons which caused them to become addicted, and getting rid of them.
2. In the thriving Internet era, students should learn self-control and self-regulation by developing good habits when surfing the Internet, finding the reasons which caused them to become addicted, and getting rid of them.
3. In the thriving Internet era, students should learn self-control and self-regulation, developing the good habit of surfing the Internet, finding the reasons which caused them to become addicted to the Internet and getting rid of them.