One of the principles of Prince 2 is that it’s product-based – the approach is about the project resulting in the delivery of discrete products. As such, the product breakdown structure breaks the ultimate end goal of the project into constituent sub-products that can help clarify and identify all the necessary work that will be required.
One of problems with the approach is that although it sounds simple, decomposing a product into a logical hierarchy is actually surprisingly difficult in practice. It just seems to be one of those things that the human mind isn’t really wired up for – so the more practice that you get at it, ultimately the better you should be.
Even though it’s not something you’ll end up doing as part of a project every day, a very similar process lies at the heart of the Getting Things Done approach to time and task management. Rather than product breakdown, GTD refers to the ‘next action’ – that’s the absolute next physical thing that you need to do on the way to an ultimate goal. Much of the time, the items on lists of things that we need to do are actually composites – in order to get an item ticked off the list, there are several discrete actions that are needed.
GTD’s philosophy is that unless you’re clear on exactly what it is you need to do next, you’re less likely to be able to achieve it. A lot of effort in the GTD process goes into making sure that what you’re capturing as things to do are actually individual things and not composites. And there are various techniques that exist to help with this – cascading actions, ensuring that the to-do item includes a verb, or focussing on the next physical action required.
So what’s the connection with Prince? Simply that if you’re using a technique such as GTD which focusses on the next-action concept – quite apart from the benefits of being more organised and in control of your day-to-day activities – you’re going to find it easier when your project next comes around to defining the product breakdown structure.

