In Lima I spoke with an elderly woman who was reluctant to join because she was distrustful of people coming to her door. I could see she wasn’t comfortable so I politely thanked her and went on my way.
Later that night I was on her street doing call backs, she saw me, called me over and became a member. She said of I were that committed I must be working on something important. I know that being polite earlier in the night had impressed her and gave me the opportunity to later sign her up as a member.