This book is equally more relevant than ever, and dated. The premise: we are a society of conflict-phobic weenies. We need to accept our aggression, use it, channel it, admit it has value.
This part of the book is great. It influenced me at a time I really needed to hear this message, to the point where I still occasionally getting the words CREATIVE AGGRESSION tattooed on my body. (And I currently have no tattoos.) Where the book fails is some of the exercises and language. This is a self help book from the 80s after all.
I've read the book (almost) 3 times now. It's a surprisingly interesting text. I keep trying to remember to embrace conflict. Not to get wishy washy and passive aggressive. If something bothers me, confront it. That's the goal, anyway.