It sounds like I am actively against planning, but I am really not. I am actively against unrealistic planning. I have found that my own system works best for me and my business: I write down everything I have to do each day prior to starting my work day, and I put everything in one of three categories: things that must get done today, things I could get done today, and things that can wait.
I made a promise to myself that I will be proud of myself if I just accomplish the things that must get done. If I have time, I get to the could ones -- but that is pretty rare. As for the things that are in the can wait category, well, they wait and that is OK.
My advice for everyone reading this article: Do the best you can, set realistic expectations taking into consideration your responsibilities, and hide two matching bracelets in your desk for the times you need to repel evil clients!