• Daily walks. I started barely being able to walk more than a few steps, I was in a really terrible shape. Nowadays, I will walk at least 8km daily. More as often as I can. It feels too good. Exercising regularly and in the long-run is key.
• Eating healthier food, aka fresh fruits, veggies, real fresh bread and NOT eating industrial pre-processed food anymore. Like none at all. No 'just this one time' or 'just one byte'. No more feeding myself with ready-made dishes, no more fast-food (I still ate delicious burgers and fries mind you... just all hand-made with fresh food), no industrial sweets or whatever either. And no industrial beverage either, aka no soda not even light.
• Not being an asshole with myself. I failed many times at keeping my motivation. No blaming and no hating (I was already punished enough by all that wasted time it meant for me to fall back into my bad habits) but I kept on going while trying to understand how/why I failed (so I would not do the same mistake again).

I halved my weight and I still eat plenty (even chocolate, pastries or things like that, just... a lot less and never industrially made), I replaced me eating shit (literally, industrial are feeding us shit) by me eating actual food (and enjoying preparing it), and I also retook control my body, muscles and joints, by starting to move it... like it is was designed to. We're not designed to sit on a couch or in front of computer all day long (be it to work or to play).