My journey did not start all at once, nor did I achieve it with the help of a single magical think-piece or time-blocking app. It was a multi-year process of trial and error. Some of the resources that helped me along the way are linked below. It's ironic that many people's journeys start online, but after all, why wouldn’t they? This is where we go for answers—the internet. I highly recommend anything and everything by Cal Newport. He is a computer science professor at Georgetown University and an established author and podcast host who writes deeply about digital minimalism and the benefits of deep work (a.k.a. intention setting).
I've also linked to dumbphone companies. Although I have debated switching to one, I have found a happy medium with my current smartphone by simplifying it myself. These dumbphones might be useful for your journey or as a backup when you want to stay present with friends or family in person by swapping out the SIM card.
Word of advice: Don't get caught up in self-help books, videos, or podcasts to the extent that you search for the perfect methodology to follow. There isn't one. The best way to start is, right now, with one small change at a time. We all have unique situations that neither I nor any authority figure can fully account for—only you can. If you find yourself distressed by your addiction to technology, know that you aren't alone. Recognizing that you want to change is literally the first step, so congratulations on this journey! Focus on changing your own habits first, rather than preaching to loved ones who are always on their phones. Lead by example; you never know who might feel the same way as you do—it might just inspire them.