This is my first comment here. I'm a 23-year-old entrepreneur from Hungary. Although not yet a manager, Manager Tools has a huge impact on my professional life. Thank you for all the extremely useful advice.
My question: you stated several times that you love David Allen's GTD methodology. I love (and use) it too and found it very helpful. However, he says that the only items that should be on your calendar are the ones that cannot happen anytime else. Appointments, meetings, but certainly not tasks. You seem to disagree with this.
What's the thinking behind this advice? Is there anything we should consider from it?