You don't have to leave your phone at home to be free of distractions. You can restrict your phone instead. I'm just a happy user, see techlockdown.com. Their

You don't have to leave your phone at home to be free of distractions. You can restrict your phone instead. I'm just a happy user, see techlockdown.com. Their marketing is geared towards the p*rnography addiction crowd but from my own experience, it works equally well for those easily distracted by screens (I have ADHD).