So here’s my suggestion to you: find a system that works for you; don’t place yourself into someone else’s system. If you find your brain works better while you doodle with a pen in a notebook, embrace it. Write your ToDos by hand instead of using a computer or an iPad. This is the system that works best for me, and I don’t expect it to work best for you.
The goal here is to get something done, not create more hurdles to doing the things you need to do. For me, a Moleskin, a pen, and Notational Velocity work best, but for you, it could be something else entirely.
I think this explains a lot about why I tend to bounce around between Things, Remember the Milk and pen and paper. Getting too wrapped up in how I manage my tasks doesn’t leave me any time to actually do my tasks.