Hello all!

This is my first post here, so I apologize if it breaks any rules.

I am looking for advice on how to build an organizational system to help me organize, plan, and schedule my life. Once it is made, I can follow it! But I am starting from scratch in actually building a system, and I am totally lost.
I am a 33 year old newly graduated professional who is just starting my career. As my schooling is now done I am able to take better charge of more than just the bare-minimum survival level tasks involved in, well, being a grown up.

I have SO MANY task lists that are all miles long. I work shifts that are constantly being switched around, as my seniority in my new position is non-existent. Best of all I have NO consistent way of keeping track of or organizing the chaos in my head and my life. It is literally driving me crazy, and I spend so much time panicking over everything I need to get done that I get pretty much nothing done. Pretty typical ADHD story.

I was diagnosed as a child, and am medicated. I welcome any and all questions/comments/advice. It's nice to meet you all!