A few times in scripture God is mentioned of speaking in a still small voice or a whisper. I find that for modern Christian's the way God speaks to us is often very "non obvious."
It's not that God does not wish to communicate to his people, but he wants them to have interest in listening. A lot of people talk about not being able to know God's will. And often we will have no idea of God's will and there is nothing wrong with that.
The interesting thing however is that we often fail to know God's will because we often fail to ever allow quiet in our lives. When we are rushing to accomplish 7 tasks in the next hour we are almost never going to notice the will of God if God is in fact trying to communicate with us.
Busyness is hard to avoid, but there must also be times where we have quiet for thought and reflection. Sometimes we cannot find direction in life simply because we are in ceaseless activity which prevents us from finding direction.