The problem with understanding God's Will for us is that it is so simple. Too simplistic for us to fully grasp. We want something more, something more in depth, something that sounds more in line with our thoughts, our plans, our actions. For, according to St. Augustine, following the will of God is the toughest easy thing we can ever do. In his In epistulam Ioannis ad Parthos, "dilige et quod vis fac". Love God and do what you will. It's that easy, yet that hard.
Brunner extrapolates on this, saying: "It is not the will of God that I should "do" something, but He wills that I should love Hi with my whole heart, and in so doing also love my neighbour as myself/" (pg. 223) We want to use the Will of God as instructions, telling us what to do at every turning point and for every decision. Thankfully, and frustratingly, this is not so. The Holy Scripture is not a guidebook to life, it does not tell us the answer to Life, the Universe and Everything Else. ( For that, see Douglas Adam's classic Nihilistic Text, The Ultimate Hitchhiker's Guide to the Galaxy) "Love never says what we are to do; it does not the Good Samaritan what he ought to do for the poor man who fell among robbers. All it says is this: Here and now do do everything you ca do for him!" (pg. 225) We are not told how to live our lives in detail. We are told to go out and love both God and neighbor. This is the most basic formulation of God' will. Again, "God does not will "something"; He wants "me for Himself"." (pg. 223) God does not need our actions, but wants our communion with Him.
This communion, is not a command. For "One who is filled with the love of God does not need to be commanded to love God....The Commandment of Love, since it emphasizes the whole meaning of all the commandments, eliminates itself as commandment. Love can only be present where it is given, not where it is commanded." (pg. 224) Since we are given Love, we should respond in Love. This is the Christian Faith in essence. Loving God and doing what we will to show and share that love.