I had the joy of answering this question as a part of Crossway's What Does It Mean? series.
Most people would say that they want to go to heaven when they die—heaven is their hoped-for eternal destination. But many of those same people believe that the route to heaven is like Google Maps—there are multiple paths to get there, and you are free to choose the one that you prefer. However, in John 14:6, Jesus proclaimed, “I am the way, and the truth, and the life. No one comes to the Father except through me.” Read the full article here.