Many in the west have had the unsavory experience of an overly aggressive “bible-basher“. In the distant past I may have been ‘guilty as charged’. 
You know the sort – the cliched, foot in the door, defiant, sometimes to the point of being insistently rude, red-faced, door-to-door insurance/used-car salesman, won’t take “No” for an answer type of guy (or girl!). It’s this sort of, lets be kind, assertiveness, that prompts thinking amongst Christians, that they don’t have the “gift of evangelism” because, they reason, they’re not as assertive as their bible-basher friend. Others become intimidated that they’re not as clever or gifted in discussing the gospel or having evangelistic conversations because they’re not gung-ho.
It may be this cliche has ruined your experience of naturally talking to friends about your faith in Christ. You may find it difficult, for whatever reason, or you may not feel confident because you’re not the natural salesman type. Yet this thinking is another form of the “fear of man“. By thinking you’re not capable of discussing the gospel, you perpetuate the error that evangelism is limited to the “salesmen” and you deny the sovereignty of God who is able to use even a donkey to speak his truth, if need be, and you become trapped into closeting your faith – which has all sorts of negative consequences in the rest of your life (more on that another time).
The best evangelist is one who, speaks the truth in love, but in such a way that you don’t have to don some sort of mask or role play as someone other than yourself. Your self, that is, that has experienced the grace of God through Christ and knows of the transformation wrought by the Holy Spirit. When you talk from a genuine experience of the gospel and your authority is God’s word, you can’t go wrong. Sow the seed and, in God’s time, reap a harvest.
