Hey! Jesus is sovereign...
Praise the Lord that you share the gospel with others! Sadly, I suspect, that were in the last days which the scripture tells us, "except there is a falling away the end shall not come." We're dealing with a time of hardened hearts and slothful believers who remain babes-in-Christ during their entire spiritual life, sadly.
When you share the Lord Jesus and his amazing sacrifice of love, be ready to stop they become defensive and before arguing, so that the next person who shares the gospel with them, will be able to water the seed which you've planted. It is an effort managed by the Holy Spirit. Pray for them that they become furtile soil for the seed of the word and that the Lord paves the way for that person to see the truth. This is especially true for these last days before the Lord's return.
A great booklet regarding soul winning is called, The way to God; by DL Moody, which led me to successful soul winning. The Lord anoint you with himself and make his word to be the power of his might to both your heart and mind. The Lord give you an ever increasing faith, and a growing love for those whom he loves, so so much in Jesus' name, our God and King, both now and forever.