Sometimes it is just easier to start at the end than it is to start at the beginning. Make a list of all the big moments in your stories and ask yourself ‘How did I get here?’
Then ask ‘What happened just before this?’ and then again, ‘Before this?’ and then again ‘Before this?’ and soon you will find yourself back at the beginning, but with no detours or diversions. This is a good way of staying on track without getting distracted.
Try doodling an outline. It doesn't always have to be structured and numbered.
Outline everything. Get into the habit of outlining from the start. It will save time in the long run.