The best way to get things done is to reward yourself for getting them done. Treat yourself for a job well done. Make the reward conditional on getting the job done. “If I do this then I will get that!” Make sure it is something you really want so the work is worth the reward. The reward can be as simple as a soda or as big a trip somewhere. The most common and easiest to follow would be to stay focused for a certain amount of time and then take a small break. For example if you are writing then challenge yourself to write for 10 min and then take a 5 min break.