"So how do you determine what rules to follow? "
What feel right, and what feel wrong. It's all about feels, which is why some peoples moral boundries differ.
"So how do you determine what rules to follow? "
I don't. Life has no rules, only law. I don't even essentially obey the law but i know not to let my life affect anyone elses in a negative way. This can be done by feels. What feels right or wrong. Trying to put myself in other peoples positions.
"Do you expect everybody to follow the same rules as you? "
Not to the exact letter, but in essence yes, they should follow the same principle if they are to be good humans.
"Is your thinking on the subject of morality influenced by religion, philosophy, or societal norms, whatever they are at the moment?"
No matter what i think, of course it is. These things have shaped society and culture, so regardless of thoughts and opinions, yes my thinking has some how been influenced by philosophy.