Our 12 year old son was spending 5 hours each day after school and longer at weekends playing computer games in his cave (bedroom with curtains closed). He was constantly tired and at times very grumpy and had lost interest in everything not connected to his computer games. He has electric guitar lessons once a week but he has had to be badgered into practicing because this meant coming off the computer.
My husband and decided yesterday that enough was enough as he was becoming addicted to the computer and it was starting to take over his life and even preventing him from spending time with us or even having a conversation with us. We decided we would restrict his computer time to 3 hours a day on school days and 4 hours a day at the weekend. We explained our concerns to him and told him the restrictions would be put on his computer with the time limits on the parental controls. Needless to say he wasnt happy and tried to argue that he wasn't addicted.