Roses are red.
Violets are blue.
Chainsaws are scary
and mine wants you.
Violets are blue.
Chainsaws are scary
and mine wants you.
I may as well add adaptability to the above. Sometimes derailing just happens and you end up with something that will be worse by trying to stick to the path. So, an ability to adjust planning for a next-best bet or at least take a wider curve to the main goal helps a lot in making the story natural. You're in for a hard time if you don't keep possibilities in mind.