Image by koalazymonkey via Flickr
Establishing weekly reviews regarding your progress and goals is an excellent way of achieving greater productivity.
I started doing this a while back, not just for blogging but for other aspects of my life like teaching, personal projects, house chores, etc.
Dustin Wax of Stepcake Lifehack has an excellent tutorial which teaches you how to implement this type of review. Although this tutorial is designed for general productivity, I think it is easily applicable to blogging.
Establish Weekly Review Habits - Stepcase Lifehack