I once had this problem. Especially when I used to work from home. The game was one click away from being opened. I used to play around 6 hours per day on weekdays and the whole day on weekends. I had to do treatment to get rid of the addiction, I really don't know how I didn't lose my job at that time. Although I ended up replacing it with other kinds of addictions, these new additions are way more subtle than the gaming and easy to manage.