This is a highly effective way to avoid wasting time. Print copies of this updated image and follow instructions from my 2013 article here: https://goo.gl/XrSwoZ
I found it very easy to rank my working day hours but not as easy for my personal time. Was playing an hour of Disco Bees a waste or a repeat? Was laundry virtuous and repeatable or a dirty chore? Was coffee with my neighbour valuable?
I also struggle with changing the 'red' zones required of me at work because, often, someone else has considered them 'green.'
It's a good conversation to have with your mentor: how to spend the time; how to change the time.