To seize the initiative is to dictate the logic of a course of events when others in the game also have free will. To be constantly in a reactive mode, never being the one taking the initiative, is a fundamentally dangerous thing, even when you’re not fighting an evil genius adversary who’s all up inside your OODA loop. It is dangerous even in dealing with friends and family who might genuinely intend to act in your best interests. The thing is, only you can truly act in your own self-interest, and indeed, have a responsibility to do so. This is the deeper reason pure reactivity is a lousy life default. It’s more than a way to lose often. It’s a way to be (or gradually turn into) a loser at the level of character: someone of no use to anyone.