Christ's plan for Evangelization is not just some sort of haphazard, shoot from the hip program where he wanders about aimlessly. Rather the Lord had a plan to visit specific cities at specific times. And, in order to prepare for his visit, he sent an entourage ahead of him. Their goal was to scout out the scene and to prepare and arrange all the necessities for his visit.
Now these lead teams, these evangelizers, received basic instructions from the Lord on how to effectively evangelize. These basic instructions are also for us who have received the mandate as Christians to evangelize.
The Scriptures say, "The harvest is rich but the laborers are few; so ask the master of the harvest to send out laborers for his harvest." Therefore before any work is to be done there must be prayer.
So step one for effective evangelization is to have a praying community asking for laborers. Habit one: Pray!