| If you're in the place where you can't stand the idea that anyone you know and therefore love will go to hell, then you should be motivated enough to prayerfully talk about Jesus, your personal experiences with God, your faith etc, whenever you see even the smallest opportunity to turn the conversation around.
Even if a not-yet-Christian mentions something about God or Christians, or Christianity, prayerfully feel at ease to ask them what their position is on God (or whatever they mentioned which ties in well), and even if they don't ask what your stance is, tell them about what you believe, whether it's invited or not.
For Christians, boldness is so important, along with swallowing worldly pride and keeping our eyes on the Lord to always be prepared to talk about Him to others.
One amazing and intellectual evangelistic tool is The Alpha Course - visit http://uk.alpha.org/ for more information - you could start a local group in your own home or with your church! (Don't worry, no preaching is needed - there are DVDs you can watch together in a relaxed setting).
Needless to say, prayer is the most important part of evangelism - to constantly bring people before the Lord and ask God for wisdom about what to say to them.