Good technique to start the day, in my case I try to do the most complicated and heavy tasks in the morning, which is when the mind is fresher and ideas are better. The tasks with more mechanical processes that involve realization and less creation I execute them in the afternoon. It has worked well for me, and even better when I get up sometimes in the early morning, I tend to be more creative then. You are a very organized person and that is worth a lot, I am not so much.
You have a good system that works for you and clearly get great results through it. Has this been something you've implemented later in life or has it been something you developed from a younger age?
It wasn't until several years after I started working that I implemented this routine, which I sometimes have to vary because Freelancer work is never stable or the same, and depends a lot on external factors.
Flexibility is important I think, the ability to shift away from established processes and schedules when required.
Yes, the ability to adapt is very important especially when the jobs are dissimilar, and in various disciplines.