#5 It's Easier If You Can Live With Contradictions & Apparant Contradictions
The universe, and writing advice, is full of contradictions... some of which may later resolve themselves as being apparant contradictions but that doesn't always make them less bemusing. If you can't cope with holding two contradictory statements as being of merit (and often equal merit) you'll only be able to write, or live, along one set of guidance notes, and any problems you have will have fewer (or no) solutions.