Hello Kenton
I think its a 'born again' thing. If it's alcohol or tobacco for example you want others to see how good it is to not take these substances. For religion, many born-again folk want to spread the word.
I think the bottom line is you have to wait for people to want to do something for themselves and then be there for them. My sister has waited 21 years for me to join her in sobriety and today is my day 13. She has been really helpful but never pushed anything on me all that time.