I just passed the PRINCE2 Agile certification. There are no quick fixes in the book, but it has some good guidance on how to combine traditional project management with agile approaches. E.g. how can the SCRUM roles be combined with the PRINCE2 roles. If you think you are working agile try the PRINCE2 assessment tool called the agilometer. It might be able to give you some new insights.
Have a look on my post Can PRINCE2 be agile? if you what to know more.