I recently read this book called "The Joy of Missing Out: Finding Balance In A Wired World" for further inspiration on topic. What this book is very good for is advice, of course. It throws great quotes at you, describes experiences the author got but also tells you actually what to do.
"Digital detox" can mean a lot of things. Being a tech enthusiast it's hard to give up using computers (especially when there's need to attend courses online), and then again it's not about denying yourself from access to the knowledge; for me it's mostly staying away from social media.
I think I'm an extrovert: I never felt like I got tired of people, and I was craving for attention as a kid. I've been on social media sites since 2008, but never figured it out, with 3 subscribers (or what have you) at best. With the flow of information so dense I started to get anxious and decided to limit my social media use to personal messages.
I'd say I only get around 2-3 PM notifications in a day. As the phone buzzing happens less often, I got a habit of leaving my phone in a bag or on a shelf in my room. It's amazing how I didn't even notice that before: I was always carrying this thing near me in my pocket, on a kitchen counter.
Of course, you get a whole lot of free time. You can learn a language, practice writing or read a book, but I found myself feeling very excited doing exercise, cooking or gardening. I think it's a proof that mind is one with the body. And when you want to talk to somebody, make a call or send a letter even.
One thing that I started with and cherish the most to this day is to get lost in the wild. Peace and quiet of nature will allow you the hear out your now carefully crafted thoughts. I agree that discipline gives you freedom to do what you want to do. Changing habits like this requires some discipline, but the reward is priceless.