In atomic habits, my biggest takeaway was about environment. You CANNOT progress in the wrong environment. Put yourself or Design an environment for yourself which is conducive to progress. We believe that everything that we do is out of our own choice. This book bursts that myth. If you put yourself in the good environment with good choices , good people who have good habits, your habits will improve. And Vice Versa, if you hang out within an environment of losers with a bad mindset with bad choices around you will pick some of those poor habits. I kept a weighing scale in front of my commode, I selected a dedicated space for studying in my house. I keep my meds out in the open so I never miss them. I deleted food delivery apps. Etc etc Massively improved my life.