Getting the Most Important Things Done

I'm still reading "The Power of Less" book and attempting its implementation in my life.  Prioritizing goals and eliminating those less important and focusing on the most important is "important."  

However, for me while buried in the middle of trying to get stuff done..the Three Most Important Task is my favorite.  Do you find overrun with task and things to do on your "things to do list?" 

 I have tasks that need done for each area of my life on a daily basis.  In trying to organize, I tend to complicate.  I've separated task by the A,B,C method but end up with lots of A's.  Chunking them by family, church, work etc. just adds depth.  

A Mary Kay Director once taught us to create a three ring binder and on each day put the three most important things to do for your business.  Leo Babouta teaches the three most important task.  

Simply make a list of all of the things that need done and each day pick three most important and do those first.  

Hmmmmm...  

That's simple.  Simple but very hard.