Fact: Writing Scenes out of Chronological Order can be Extremely Draining

I like to write my stories from the beginning. Prologue, Chapter One, Chapter Two, Chapter Etc, Epilogue if necessary. I may occasionally write scenes out of order if something comes to mind that needs to be written ASAP, but on the whole I try to write things In Order, so that I can have a defined feeling of beginning, middle and end. I worry that if I just wrote scenes at will, I'd just keep writing scenes til the end of time, with no actual way to tie them together as a story.
My current project started out sort-of-chronologically ordered. Now it is just scenes. And I kind of want to scoop my brain out with a rusty spork.

Urg.

~Katherine