Catch up with accumulated work each day

Let others know you won’t be available.
Interruptions are productivity killers, so letting people know you are doing something special and will be out of reach for a day is an absolute must sometimes.

Decide how long you will work.
Set a concrete target. For example, you could commit to working for 8 hours, 12 hours or however long you think you can go.

Commit to doing the work.
Don’t just set deadlines, but commit yourself fully to doing quality work within that period.

Refuel before you think you need to.
For example, have a snack a little earlier than normal or stand up before your butt gets numb.

Take breaks at counterintuitive moments.
Take breaks when you are in the middle of an important task. This will help you avoid the temptation of procrastination.

Complete your task for the day before stopping|
Ensure that you do all the things scheduled on your to-do list.