The first way many of us seek to fill emptiness, is finding an answer to it. In many ways finding the answer to our emptiness could be on a superficial level of the popular "Coolness." We fill this void of emptiness with what being cool is, such as; being the rebel, the wealthiest, most popular, lots of friends, etc. With all these different criteria of cool, then that void of emptiness should be filled. Its many of the roles in society we try to be to fit in with every ones needs. This is where I believe being the conformist is one ultimate way of filling the empty and finding a meaning. Now there are downsides to becoming a full-on conformist, people will believe you are fake. People will categorize you as fake for being a conformist because you, yourself does not have a self of your own. In the "cool" societies this looked down upon because you do not bring fourth a unique and individual trait, which in the cool societies everyone wants to duplicate. So if you would like to conform, do it in a moderate fashion because almost everyone is.
Another way I look at how we fill emptiness is to be everywhere, with everyone, doing everything. The answer to that is creating something everyone can relate too. Heroes are great examples of these characteristics because everyone idolizes them. Heroes are the type of people that are perfect and nothing could be wrong with them because everyone likes him/her. For example in the 1960's when blacks were segregated from whites, Martin Luther King, a famous black activist stood up for what he and millions of other black males and females believed was right. In the black culture, they looked to Martin Luther King as a hero for ending segregation. Not all would agree, but majority would believe and even for Hitler, his near-accomplishment of taking over the world in the 1940's might of been heroic in the eyes of most Germans. Both these two individuals created a movement that captured the eyes of many, which would categorize them under heroic(depending on your belief). So I feel that they had filled most of their emptiness.
My final thought on figuring out or understanding emptiness and filling it is, what if we just don't care. If we did not care about having a meaning or filling an emptiness would we be better off? Is it possible to not care about it all? Basically just questioning life as a whole would to just stop, and finding an answer to it has deceased. Then how would our society be like?