Everyone of us has a mitzvah with which we find an affinity.
So when you encounter another Jew and want to share the beauty of a Torah life with this Jew, there is no need to convince, to argue, to cajole...
Just find the mitzvah this Jew wants to do and say, "So why not do it?"
Finding a Personal Mitzvah As a child, growing up Orthodox, I found myself surrounded by rabbis who functioned as G-d's policemen: "don't do that-- it's a sin," they would tell me, rather than telling me why to do the mitzvah in the first place.
Today, a rabbi myself, I consider myself a teacher, not a policeman. There are so many mitzvote, so much beauty-- how can we harden our hearts? Let everyone choose whatever mitzvah moves them, and do it with the fullest kavana/intention/goodwill possible: that will be the finest sort of tikkun olam/repair of the world, and also link G-d's feminine and masculine personas.