First, it may be helpful to have an open and honest conversation with your friend about their internet use and the impact it is having on their life. Encourage them to be honest about their feelings and to express any concerns they may have.
Next, it may be helpful to set some boundaries around internet use. Encourage your friend to limit their time online, and to engage in other activities, such as exercise, socializing, or pursuing hobbies or interests that do not involve the internet.
You may also want to suggest that your friend seek professional help, such as counseling or therapy. A mental health professional can help your friend identify underlying issues that may be contributing to their internet addiction, and develop strategies for overcoming this problem.
In addition to seeking professional help, there are several self-care strategies that may be helpful for your friend. These may include practicing relaxation techniques, engaging in regular exercise, and finding healthy ways to cope with stress or negative emotions.
It is important to remember that overcoming internet addiction can be a long and challenging process, and it may take time for your friend to fully recover. However, with patience, support, and professional help, it is possible for your friend to overcome this problem and lead a healthy and fulfilling life.