
Completely commit yourself to work on something for one hour. At the end of that hour, decide if you want to keep working, and if so, fully commit for another hour.Applying the power hour technique to your best hours would most likely boost your productivity. Try it!
By doing this, you are forcing yourself to remain focused.
Once that hour is up, you can do whatever you want but during that hour you need to give 100% of your available energy to the task at hand.