The Rhythm Method
One of our goals for Trajectory is to provide a guided path to a better way to develop software. When possible, we let that influence the way Trajectory works.
Iterations are each one week. We find that an iteration length of one week is a natural rhythm which shouldn’t be ignored and will lend itself well to operating at a sustainable pace.
Attempt to break down larger stories that you don’t think will be completed in one week down further. If you really can’t complete a story in one week, thats OK, it’ll flow across multiple iterations.