As I mentioned in my product philosophy document, I believe that product management is a craft that can be honed. And since it's a craft, there's a set of actual tools that product craftswomen and craftsmen can use in their daily practice.
This document is my personal, ever-growing collection of the ones I believe in and use in my practice.
Many of them are things that seem pretty obvious when you read about them, but trust me that the gap between talking the talk and walking the walk is huge and it's not so easy to actually use them and remember about them regularly. They're simple, but they're not easy.
Key point: Always make sure that people understand the "why" before talking about the logistics ("how").