A circle is a group of people that rely on each other. Usually it's a mix of relatives, good friends, and perhaps professional colleagues. Nurturing and helping your circles is natural.
Circles are strong factors of change. When you convince a circle you are in a good position to convince bigger social groups.
Strengthen your circles. Stay in regular communication with relatives and friends. Share your ideas with them. Offer them your help.
For instance: write down the names of the people that compose each of your circles and let them know.