For a book about focus, this one seems to meander a lot.
Indistractible is all about the philosophy of distraction and strategies for how to avoid its worst effects.
You cannot be distracted unless you know what you’re trying to do. Be clear and intentional. All motivation stems from a desire to get away from discomfort. Ask yourself why you're uncomfortable when you're getting distracted. Set aside specific blocks of time to do actions that align with your values to ensure they get done. Never fail on your appointments with yourself. For everything distracting you that isn't in your head, ask yourself "is this trigger serving me or am I serving it?". Put effort between you and the things that you want to stop doing.
Everything boils down to comfort. All motivation is seeking freedom from discomfort. Time management is really pain management.
Time you plan to waste isn't wasted time.
The "limited amount of willpower" idea is false.
"Instead of starting with what we're going to do, we should begin with why we're going to do it. And to do that, we must begin with our values."
You can't call something a distraction unless you know what it's distracting you from. Things you traditionally wouldn't consider "distractions" can very much be a distraction if that's not what you planned to do. If you give up self-care time to work on Work, for example. Or the other way around.
Implementation Intentions - block scheduling. Setting aside dedicated time to work on a limited set of things tied directly to a value, among a set of values balanced across the important dimensions of life.
Show up on time to the place to do the thing you want to be doing - even if you fail to do the thing when you get there. Not showing up guarantees failure.
Make time for taking care of 1: Yourself 2: Your Relationships 3: Your Work, preferably in that order. Literally schedule that time into your calendar. The people you love shouldn't be getting whatever time you have left over. For the "work" portion of this triad, set aside dedicated time blocks to achieve specific, well-clarified results at work. Don't let other work-related things creep into those blocks.
The main question:
Is this trigger serving me, or am I serving this trigger? This section is full of tips and recommendations for getting fewer pings and alerts. Here are some of my favorites: