Hi Louis,
I think it a wonderful personality trait to be polite and treat people with courtesy. I have met people on the other side of the fence that are absolutely brutal and I try to steer clear of these people. When I got into recovery I had almost no self esteem left. I was overly polite and courteous to everyone all the time as I felt inferior. Some people began to treat me as if I was inferior and I began to notice they were taking advantage of me. I grew extremely angry when I noticed this and almost stopped going to AA altogether. I talked to a couple of the people that were taking advantage of me and stopped it. They didn't get it though. Along with my low self esteem I was also very sensitive and still am today.