Tim Zulker, one of the contributors to GoThereFor.com, on where to start in evangelism:
We often discuss barriers to outreach: fear, lack of knowledge, rejection, cultural disconnects, etc. These may be real barriers. And there are more. But the deeper barriers to fruitful outreach are what hinder the glory of Christ from shining out from our hearts: willful, unconfessed sin, and broken relationships between Christians in the church. If the gospel is fundamentally a heart issue, then it stands to reason that that’s where the battle will be—in our hearts. If we’re at odds with the Spirit, by consciously allowing sin to fester, we will be out of step with the Spirit and not seeing his fruit. In other words, we will not be abiding in Christ.