I liked your post; it was well written with good practical illustration of your point. And it is definitely the case that lesswrong needs more posts about creating good habits on a practical level.

However I do have one concern; when you say that it is possible for anyone to acquire any character trait. I know eliezer has repeatedly bemoaned the state of "nothing fucking works," and I can imagine simple physiological mechanisms such that some character traits are practically impossible for certain people to acquire.