But you need to think farther. Let's use writing a book as a stand in for other things, e.g. being able to code, playing an instrument, mastering embedded electronics programming, you name it:
The person who enjoys¹ writing a book and wants to finish them will likely become better at writing books than the person who just wrote a book to cross it off their bucket list.
There is also people who enjoy the process of writing so much, that the outcome literally doesn't matter anymore and they don't have any ambition to finish anything.
In reality most people who achieve great things have both a way/process/quest and many destinations/outcomes/goals along the way and the two things have to be somewhat in balance. Thst balance can differ for different people.
When people say you should focus on the way, not on the destination what they mean is: Don't be the person who just writes a book to cross it off the bucket list, while hating every second of the process and learning nothing from having done it.
¹: The word "enjoy" doesn't have to mean they feel good doing it, it just means there is an urge to do this versus something else
The person who enjoys¹ writing a book and wants to finish them will likely become better at writing books than the person who just wrote a book to cross it off their bucket list.
There is also people who enjoy the process of writing so much, that the outcome literally doesn't matter anymore and they don't have any ambition to finish anything.
In reality most people who achieve great things have both a way/process/quest and many destinations/outcomes/goals along the way and the two things have to be somewhat in balance. Thst balance can differ for different people.
When people say you should focus on the way, not on the destination what they mean is: Don't be the person who just writes a book to cross it off the bucket list, while hating every second of the process and learning nothing from having done it.
¹: The word "enjoy" doesn't have to mean they feel good doing it, it just means there is an urge to do this versus something else