You'll be thinking a lot about change this month I am sure; you may well want to get your filing sorted out. Or improve your ability to prioritise. As you make choices; don't let the system hold you back.
The system? The mechanism, the approach. E.g. if you decide to do more cycling, there are a range of different bikes you might use. For simplicity let's say you could choose a commuter bike that folds and goes on the train or a mountain bike which is a lot of fun at the week-ends. Clearly the choice of bike or mechanism will help your success with your cycling or not. Similarly with time management (maybe you need GTD or maybe it is never going to work for you) or presenting (simply because the course said use slides..maybe you are a story-teller).
Once you have made a decision on the change you want, be careful to match the system to your way of working as much as you can. Otherwise, it's not that you can't prioritise it's actually the system stops you prioritising.