Discussing christ with a humanist

I wanted to share an assignment that I had to do for school, concerning sharing our faith with those of differing world views. My focus was sharing my faith with a humanist, as I often encounter them in my daily life. 

• Practical steps that could be taken to build a relationship with a follower of the humanist world view who is either a co-worker, neighbor, or fellow student is to just be there. I would get to know them same as anyone else. Find common ground. If they like coffee, try to have coffee with them. By spending time with them, discover where they are in life, and what their dreams are. Over time hopefully they will become more than a coworker. After that I would be praying for an opportunity to talk with them about God. This can come at any time, so i will have to be vigilant.
• What barriers/hindrances I would anticipate in presenting the Christian gospel to a person from the humanist world view center around convincing them not only that God is real but that they need him. It would be hard to convince a person who does not believe in a God that he exists and that they need him. Considering that they believe that man no longer needs God. If man has transcended their need for theism, and religion is a crutch I find it challenging to overcome that. I would have to counter the misdeeds of the church in history, specifically

• Personal challenges that I might have with presenting the gospel is in finding the right moment. I find it hard to just walk up to someone and ask them if they know whether or not they are going to heaven. It seems so forced to just lead off with that. I have to wait for the right time, and then it is important to seize the right moment when it hits. For example I worked with someone who is gay, and I waited until a moment came when they encountered a Christian who was hateful to them because they were gay. As we talked about it, I was able to tell them that I was a Christian, and I apologized for the behavior of my fellow Christian. I explained that my heart and the heart of God is not to see them change in order to become a Christian, but for them to say yes to the work of Christ. After that any change that needs to take place will start in the heart. God doesn't want to just make them change on the outside, that's not change. Change takes place on the inside long before it shows itself on the outside. I told them that God is not after their behavior, he is after their heart. It's not that I don't think that their lifestyle needs to change, it's that no change will be lasting unless God works it from the inside out.