There are two main types of writers: “discovery writers” and “outliners”.
Discovery writers are kind of like Gardeners, growing their story from some seed of an idea and not quite knowing where it will take them.
Outliners can be thought of as architects, mapping their story out from start to finish before they ever write a single word of prose.
Gardeners should watch out for “and then I guess it ends” type of endings.
Architects should watch out for “world builder’s disease”.