Planning on Purpose

Where would you suggest to start with going from haphazardly living life as it comes to intentionally planning and executing on a daily basis? Embarrassingly said..I am one of those that writes many lists but loses them. Thinks I’ll remember something and of course doesn’t. Melts down when I realize all I need to do and does nothing. etc etc etc. I want to be organized. I want to plan and live accordingly. I want to live on purpose. I’ve learned a ton in scholars but this continues to be a constant sliver.