Speaking of kiruv, I read a story about a secular Israeli couple who came to America. A frum couple next door wanted to mekarav them and so they asked their rabbi what to do. He told them to just be a good example. – They became friends with them and just spoke about general things when they saw them. – Later, they invited them for Shabbos and had a nice time. Over time, the couple who came here decided to be become religious and move back to Israel.
Sometime, we just need to be a good example and be a good friend, and it will overflow to others.