The most effective medium is yourself and the power you communicate by your intention and your story.
Power-over is amoral. Power-to is responsibility.
Knowing your history can give you the tools to shape your future.
Don't follow your dream - lead it!
Use what you've got. What you need is usually there if you can see it and if you have the courage to use it.
The more we practice risking to leap, the more proficient we become, the more our fears melt away, and we grow ever stronger in the doing.