Getting Things Done - GTD

Self-management: Bottom-up Approach
When it comes to focus on doing what’s really important, it has always been completely logical to me to do it from top to bottom. That is, first I reflect on what I want to achieve and why; then I create in my mind some kind of objective or goal; next I define one or more projects that I ought to do in order to achieve that goal; and finally I decompose those projects in concrete tasks upon which I can act (at least the initial tasks which will help me get started.)