The next action is just to launch you into action on that project, so ideally it should be something you can just DO and you come up to speed on where the project was at almost magically while doing the task, and are usually at a good point when you have to stop working on the project to say "what was I about to do next?".
Its not a disaster to get it wrong sometimes. It just means when you pick up the project, instead of launching straight in, you'll have to re-think. But if you can then DO a few steps then there's nothing to rewrite, just work on the project for a bit and "bookmark" the project again when you stop.