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.
I believe it is how you see and love yourself that makes you important. You may be like a needle in a haystack but you are important to your family and friends. If you see yourself as someone not only as somebody, it builds your self-confidence and it radiates and felt by the people that surrounds you. It may be in their subconscious but you are important in their lives.