Not necessarily by standing on a street corner with a Bible, although that may be what Jesus asks of us. Evangelization may occur in a letter to your sister or a golf game with your brother in law. Evangelization occurs much more with actions than with words. The reason I said the best evangelist are seated before me is that you can impact your family and circle of friends more than any person in the world. Those evangelists can help us stay fed but the people who really made a difference were people we saw on a daily basis.
Faith is contagious and is easily spread.
If we went around the Church today I bet everyone could name one or two people that deeply influenced our Christian walk. It may have been a parent, a simple parish priest, a co-worker, or a relative. When we heard their secret was Christ we knew we had to deepen our relationship with Jesus. Even if they do it may not have as much as an impact as the example you bring by being in close proximity with them on a regular basis. God takes ordinary people and does extraordinary things with them.