Dr K (from HealthyGamerGG) had a fun experiment on this topic: Try setting the goal of not using your smartphone when you're on the toilet.
Notice the voice of protest within you as you seriously consider doing this. Why is that part so unwilling to give up something so trivial for just a few minutes?
It's a truly good exercise for mindfulness/meditation/re-calibration of our dopamine system. Obviously the principles apply everywhere in life, I just love this example because it is so relatable for most and highlights the issue so clearly.