One of the differences between regular developers and software craftsmen is that software craftsmen are on a mission. They are on a mission to make things better, to deliver value to their clients, and to inspire people around them. They are not afraid to lead the way and drive changes. For software craftsmen, striving to always do their best is just a natural state of mind.
The entire premise of the book is about getting us to look at software as a craft. So take the time and energy to make things better for everyone rather than just seeing it as a job to get done and get to the next thing. Taking time like this leads to better results in the short and the long term