Based on my experiences working and living in secular environments over the past decade or so, here is a framework that I have found helpful!

When talking with an unbeliever, it’s very important to maintain an attitude of kindness and grace. If the person gets angry, you potentially lose your opportunity to share the gospel. 

The gospel is a simple message and doesn’t change, but people are unique with different backgrounds, beliefs and ideas about spiritual things, so a “one size fits all” approach is not as effective as customizing the approach to the person.