Whatever you want to do, try “boxing” it into a set time period and ignore distractions, including email, calls, texts, making coffee, alphabetizing your bookshelf, or grooming the cat.
How to Do. One. Thing. At. A. Time
Aytekin Tank

This ties in well with Cal Newport’s idea of setting a deadline and working at a high intensity, or as he calls it, “Rooseveltian”, sprint.