Well, a week or two ago someone in here asked me to explain what is meant by the will of God. My interpretation of that term is a condition where Godly perfection exists. A world where everyone follows the 10 commandments and loves their neighbor would be a perfect world and a world in the will of God. Obviously that condition does not exist at this time but to achieve a world like that would be the goal of the Christian community.
Christ said "Ye do the will of the Father {God, the father} and ye shall have eternal life". That implies if you want eternal life you should do things like follow the 10 commandments, love your neighbor as yourself, do good to those who vile and persecute you etc.
Also, Christianity teaches that as you get deeper into Christianity you are able to hear more clearly the voice of God communicating with you. I'm not talking about an audible voice (although that did happen sometimes in the bible) but a spiritual communication that you know is of God. If God is telling you (in the spirit) to do something -- for example to give 50 dollars to a charity when you personally only want to give 20 -- then to do the will of God here you would have to give the 50. Bill Gates might give 5% of his wealth to charity. But if he were a Christian who was in communication with the God of this universe, God might ask him (in the spirit) to give 70% of his wealth to charity. Obviously there would be a lot of people who would be better off if he gave 70% of his wealth to charity; and then the world would be closer to the will of God and thus better off.
The goal is to have a world that is 100% in the will of God because that would be a world that would be in the long term best interest of everyone. As I said before obviously that state does not exist now (because of the sin of man); but that is the goal -- of Christians, anyway. And an environment that is 100% in God's perfect will be a state of existence that I believe heaven will be like.