Only Hashem knows who is going to gehenim and who is not. The rasha can be mekabeil olam haba in an instant.
Yanky, you may be a very ehrliche yid, but you are not the yid that Aharon Hakohein was, and you are DEFINITELY not the type of person who would succeed in kiruv work in my neighborhood. Put the fear of G-d into them??? PUT THE LOVE OF G-D INTO THEM. And please do not call yourself a mekareiv.