What do you think?
I think there is no criterion for importance. The people whom we consider important do not consider themselves important. Only others perceive them to be important. If importance is a matter of perception, you have to first perceive yourself important.
One way to become an important person in the society is by serving the people in the society who are in need and serving the Lord God Almighty. Be a leader in whatever skills and expertise you have, be a good provider, helper ans supporter as well to others.