One witnessing tool/method that my wife and I really like and that was used by Jesus is to use the 10 commandments. One organization that really takes this to heart and puts it into practice is Living Waters (google it). They call it The Way of the Master. They have some really good resources and witnessing tracts/tools that are cool. The ones that I keep with me all the time are the $1,000,000 bills and 10 commandment coins. I'm also praying for your friends soul.