Having a bottom line is very much like the pictures in your quality world. It is a good thing, you should have things you believe in and stand up for. Somewhere in that mom's mind was the picture that children should be respectful to their parents. That ideal obviously guided her in parenting her child. It is also important that those close to you are aware of your ideals and beliefs.
I made my first cognizant placement of beliefs in my quality world when I was 5 years old. I decided I would never do anything that would disappoint my grandparents, and I decided to check with God before I choose a behavior. Of course, I chose many troublesome behaviors in my life, but it is amazing how strong those beliefs were and how they offered council in my life.
I am a proponent of lists. It was helpful for me to make a list of the things I am really passionate about, and investigate why I have them and how they work out. I discovered I have preferences, but they are negotiable. For example, I don't like to eat with people who chew with their mouth open and get food all over. I can just have them sit by Jim, because he doesn't care. I don't like to hear people crack their knuckles, but I can let it go because the event only lasts seconds. It has always been important to me that I would be considerate of other people's beliefs because I lived and worked with so many different people. Nevertheless, I kept my beliefs, explained them when I needed to, stood firm when I felt it was important, and kept it to myself when that was more important.
Oh, by the way, in less than 5 min I saw that teenage girl laughing and interacting with her family.