The first thing you have to do is pick what you are going to be spreading.
2 Corinthians 5:20
You are ambassadors for Christ. God is making His appeal through you.
What do I represent?
The second thing you have to do is figure out your mode of transmission.
Who have you told about the treasure you have found in Christ?
The third thing you have to do is infect the entire world.
What is a witness?
One who can give a firsthand account of something seen, heard, or experienced.
1 Peter 3:15
"Am I going to start doing what God commands? Or am I going to just continue on living my life and hope someone else does it?"