At uni, I became really good friends with probably one of the most organised people I think it's ever possible to meet, the type of person who thrives on creating order out of chaos; putting in place process, management and structure. He taught me a simple truth that I try and live by; that if, in a world of many priorities, you don't write down what you need to do, it probably won't happen. Or, in his own words "if it's not on a list, it doesn't exist."
Not only has this helped me be more effective, I also worry less about what needs doing. A simple but - for me at least - a highly effective truth. Now, what do I need to do today?