You can play a part in making things better! Many of the blogs I visit demonstrate great talent in communicating, both in words and through the power of photography. Use that talent to share your passions and concerns. You are part of the solution!
If your concern is human rights, blog about that. Show photos of people; we are instinctively drawn to faces! If your concern is health or economic issues, use your talent there. And again, write your congressman, or look for an opportunity to share your views in person. Calling is effective too, although sometimes uncomfortable for us introverts.
If you are not already a member of an organization supporting your issue, join one or sign up online for their updates.
"Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it's the only thing that ever has."
~ Margaret Mead