Sometimes we live so close to ourselves that we are unable to look at a given situation from the outside. We are just stuck in the middle, and all we can see are the challenges and battles surrounding us. That is when it is important to try to see the situation from the outside because you will often see it with a clearer perspective and understanding as you do so!
God is a source that will help you see things from a better perspective. Not only can he see it from the outside, but he can also give help and direction that will help you maneuver in the right direction. I really like the example of driving in traffic. From your perspective, a road might seem totally perfect, but you don't know before you get there.
That is why it is easy to walk and drive based on our own wisdom. But, God can see traffic from above. He knows what will come around the corner, and that is why it is so vital and important that we put our trust in him. Even when we don't understand his instructions and why he might say what he is saying (or whispering), we can still trust him.
In other words, life isn't only about you trying to see your situation from the outside in order to understand it better but to go to the ultimate source for the best instructions available.