You too have immediate impulses that you are unable to control, you too are affected by marketing and advertising.
Its frankly not possible and anyone who believes otherwise is likely fooling themselves.
I would reiterate my recommendation of investigating why you feel such lack of self-control.
If you need to give it up to put it down, then your problem isn't smartphones, and you will fill it with something else in short order.
Moreover, you are going to be increasingly at odds with your surroundings: the world is becoming more smartphone-like, not less.
Smartphones, or more specifically, the addictive patterns used by pretty much every popular 'app' (e.g., Facebook, Instagram, WhatsApp) are hard to defeat for a lot of people. This is an inherent feature of how our brain works, not a personal weakness — despite personal variations. For some not using smartphones (opting for 'dumb' phones instead) may be a very sensible thing to do.
> Moreover, you are going to be increasingly at odds with your surroundings: the world is becoming more smartphone-like, not less.
Everybody used to smoke too. There are plenty of folk who believe that you shouldn't be required to walk around with a computer on your person at all times.