optimize for the start line, not the finish line

If the Pomodoro Technique doesn't work for you and you prefer to do tasks from start to finish in one sitting, you should adjust your plan to fit with your focus.

So work until you complete those tasks, and then take a break.

Research indicates that keeping your eye on the prize makes the prize in question appear closer than if you let yourself get distracted. 

Visualize the finish line as closer than it is to make the process feel easier and keep distractions away. 

After you start working on a frog, continue working on it until you can take it off of your to-do list.

To do this effectively, you'll need to make sure you have tasks that are small enough to complete in one sitting. Also, make sure you have time blocked to work on your task.