If something is harming you and you can't break away from it, then you are addicted. If you do something habitforming out of enjoyment , then it could well be a passion. So, like myself, I love the computer. I find it fascinating and highly useful so I'm at it through out the day. If it is hurting me , like let's say eye strain, I back off roughly 5 minutes every hour. If on the other hand, it is hurting a relationship that is important to you , then its time to back off for a compromise. Trust your good judgement and I am sure you'll make the right decisions.