This is an interesting piece.
I have to admit, I get hung up on the first commandment too often.
i disagree that #3 is bad advice. I’m not saying that if you see something amazing you should not shoot it, but venturing out with a purpose is something I think is important. It makes you look at things and for things you might not otherwise see. I like to go out with a task; shoot only shadows, look for only reds, or yellows, something that I can color isolate in post, look for only rust or decay, only wooden signs, etc. it make you think, compose, and make art out of something specific rather than shooting just anything you see. I love shooting the decay of Detroit, or only water or dew drops on plants or only things that are broken. Sometimes giving ourselves an “assignment” brings out more creativity. Just IMHO.