Reactive not Proactive

My step dad might be the most reactive person that I have ever met. Whether it's procrastinating doctors appointments till he's out of his meds, or failing to send in his taxes before the allotted time, he is always waiting till the last second. And when he realizes that his time is up, he gets all worked up and has a giant freak out episode that my mom has to talk him down from. I may be young (younger than him anyways), but even I have the common sense to stay ahead and the things that need to get done before they're needed. You can't put something off and then be upset when it goes on for too long; just do it and get it over with! And my poor mother, she's always the one trying to do everything for him because he literally cannot handle it himself. I don't know any other men who have to have their spouse call to set up a doctor's appointment for them or to find out when the workers are coming to fix the roof. It's like everything that requires adult consideration, he can't do it. Everything stresses him out, so he puts it off until he's ready to have his little meltdown. I honestly do not know how he's lived this long, or how he lived all those years before meeting my mom. He must've gone from his mom to his first wife, to my mom. From one mommy to the next. Ugh, I can't stand weak people like him!