There's only 1,000 different conclusions as to what it means for Jesus to drive the traders out of the temple. The temple economy and the trading that took place was important to the activity of the temple, but things clearly weren't serving the purpose that the temple was built for -- it wasn't serving as a meeting place for the people and God. Something was getting in the way, so Jesus clears it out, and then he remains, teaching daily. He is filling the space with his Word, so that the people can hear the teachings of God.
There's things in all of our lives that interfere with our connection with God. Are we willing to be honest and admit the places where we fall short, and find a way to let God's Word fill that space in our lives?