I´ve read a book recently called "Hooked" by Nir Eyal. https://www.amazon.de/Hooked-How-Build-Habit-Forming-Products/dp/0241184835/ref=sr_1_1?ie=UTF8&qid=15109

I´ve read a book recently called "Hooked" by Nir Eyal. https://www.amazon.de/Hooked-How-Build-Habit-Forming-Products/dp/0241184835/ref=sr_1_1?ie=UTF8&qid=1510910504&sr=8-1&keywords=nir+eyal+hooked https://www.amazon.de/Hooked-How-Build-Habit-Forming-Product... It´s exactly about this topic. He also gives quite a few examples of the achievements of Apple and so on. Really interesting.