It is human nature to resist change. That is why psychiatrists and psychologists exist, they are there to help us make the necessary changes in our lives.
The "Detox" break is nothing more than a gimmick and chances are it will cause more harm than good. Anxiety levels will go through the roof as separation from habitual use of technology is as bad as a drug addict or alcoholic's withdrawal.
It has taken years of clever marketing to make people think that cell phones, the Internet and even TV essential items that we cannot live without. To undo that would take as many years.
Any person suffering from the now recognized technology addiction syndrome can get far better help consulting a therapist than a quick fix so called Detox holiday.