Can you explain what you liked about The War of Art? I read it because I have seen it mentioned on this site many times, but I did not enjoy it at all. I found that the first two sections contained very little useful information, and the third got somewhat silly when it started evoking angels and muses. I could see it being a motivational read for some?

I find it strange that it's mentioned in the same context as your #1 and #3, which I think are absolutely essential.