Rather than content myself with a pithy comment, I'll take my own advice and try to say something helpful.
If you find that you're spending too much time on leisure activities, I would contend that your work is not sufficiently interesting. If you'd rather be gaming than doing something productive, clearly you have not found a satisfying enough line of work. Perhaps a broadening of your horizons is in order.
When you DO find something you love to do, it's like nothing else in the world. For me, it's building anything at all. A shack in the backyard, a crystal radio, some random (and usually defective) contraption on the breadboard, a software project, or even just making a hilariously bad model in Blender. The act of creation or construction, for me, is more immersive than any game. If the work you do outside of leisure time doesn't do this for you, I can only offer my sympathies and recommend that you look around for something better.
The problem isn't that you're addicted to gaming. It's that your focus is too narrow to be addicted to anything else. Humans are creatures of fixation - we are at our best when we are completely focused. This cannot be achieved without true passion for the task before you.
It's simple but sage advice: If you're bored, try doing something new.
