When God took Israel out of Egypt, He did not take the short route to Canaan lest the people change their minds and return to Egypt. Instead, He took them into the wilderness beyond the point where they could return without dying of thirst or starvation. In this sense, He burned the bridge back to Egypt so they had no choice but to continue on to freedom. So too, many of us have bridges that need to be burned so we can move forward to be what God desires.