No matter who we are, we have power, and how we use that power matters.
First, you have to identify the powers that you have--you likely have talents in specific areas, energy reserves for particular action, connections, experiences, knowledge, and resources--all of that adds up to your collective power, the goods you have to make a difference and live a good life.
Once you've identified your powers, you need to consider your values and dreams--what do you value and where do your dreams lead you. Then it's simply (actually not so simply) matching up your powers with your values and dreams to make a difference in your own life and the lives of others.
I'll think on this matter in the days to come.