Have you ever been off-road in a Four-wheel-drive? "Mudding" in a Jeep can make a mess of your vehicle. The spray of mud thrown up from your tires, splashing through holes filled with filthy water - and all through this you run your windshield wipers non-stop, trying to at least get a glimpse every once in a while of where you are going and what you might run into along the way.
Life is like this in some ways. You are trying to do what is right, perhaps trying to follow the Lord as He leads you, but the world around you is filthy, and the junk in life is splashing all over you, making it hard to see what is right. Much like your windshield, you need something to wash the mud away so you can see where you are going and be aware of any obstacles in your way.
The Bible is the tool we were given by God to clear the windshield of our lives. As the philosophies and lies of the world muddy up your views of God and of life, you need to go back to His word often and allow Him to wash the mud away from your view so that you can see things the way God does. God's vision is always clear, because sin cannot blind Him. We, on the other hand, can be, and often are, blinded by the sin around us, until we don't know what is right or wrong, anymore. Our windshield is covered with the dirt thrown at us by the world, and sometimes by our own choices splashing the mud up and getting it all over us.
How long has it been since you ran the windshield wipers to clear your windshield? You wouldn't go "mudding" without cleaning your windshield consistently, or you would crash. How long until you do this in life? Read the Bible at least once every day! You'll be amazed how much easier it is to see.