[dfex]

For those struggling with the above, I'd add one more step that I learnt here on HN - go to assistive settings and set your phone's screen to Black & White. On the iPhone, triple clicking the lock button will do this for you.

You would be amazed how much taking colour out of the equation lowers the addictiveness of the content. I guess the people that make poker/slot machines knew about this decades ago, but I think this one step helped me more than anything else.