One reasons why checklists are valuable is because they help concretize information better. It's easy to say you'll remember something when in fact, there's usually so much going on in our lives that it's easy to push that information back. Having something in front of you that reminds you what you need to do is important, especially if you tend to be scatterbrained. Building off of that, it also helps you prioritize the tasks that need to be done. Whether it's doing it out of importance or brevity, a checklist is a good way to keep your mind in order and focused.
I would like to be able to think in a more logical way. Normally when I do tasks, I tend to do things more intuitively which has it's advantages but becomes a major obstacle when the workload gets too deep. Additionally, I've found myself thinking in circles when really, some problems can be solved if I'd sat down and thought of the solution more methodically.