Cool, I have the exact same house timer. Anyways, it sounds like you believe you have an addiction (it is subjective). There is nothing wrong with being on the internet forever as long as you are productive or at least not letting it get in the way of things.
What do you do on the internet? There is a chance you may be addicted to that behavior and not to the internet itself. (Gaming, pr0n, blogging...)
Perhaps you lost your job, not because of the internet, but because you lose attention. Particularly to what time it is. Maybe it would be wise to set an alarm at 2:00AM or something that you force yourself to go to bed by.
Another good idea is to break your 15 hour eye-straining, arthritis enducing, ***-soring session into several sessions no longer than, lets say. 3 hours. Chances are you will find something else to do while you are away from the computer and you may get distracted with that instead.
Anyways, just some ideas.