Groups Guy

What causes people to change? Bill Search writes that, “Alan Deutschman began researching how people successfully changed, he bumped into a startling reality: people change more consistently and stay changed through relationships!” (p 87) I like the quote. Its interesting. Is it correct?
Have you experienced that to be true? Can Community effect folks that way? Have you seen it in your H/ABF? How would you back this up in scripture?
DA