I write poetry, and I frequently throw away the first half of whatever I write and then publish the middle and the end. I have discovered that lots of writers do this. Even George Lucas did this in Star Wars, starting with Chapter 4. A New Hope first. So my poems get straight into things quicker. Of course not everyone finds this suitable.
My ending is always important. Ending in a way that is memorable is important too. Also I take very long writing hubs. But even though I am slow, I try hard to make it be a good read. Keep asking yourself what it is about, find the shortest route to that outcome or point...I hope that helps a bit.