Putting first things first is a habit about planning, organizing and executing your activities around your most important priorities. If you put first things first you have decided what those first things are (hello personal leadership!) and execute them when you when you planned them (hello personal management). The third habit builds on the 2 previous habits.
Now there are a vast amount of time management tips and tricks out there. I’ll just write down what has been working for me over the last months.