this depends on if your distractions are internal or external. For a while, i kept a notepad next to my keyboard, a distraction log. When distraction is detected, note the time of day, as well as the origin of it. External distractors can be eliminated by env control, internal ones are trickier...

Maschinen Krieger, scale models and the occasional Gundam. 

Ethereum Core Dev - Besu - PG4LYFE

for internal distractions, your mileage may vary, so spend a good amount of time describing the distraction as far back as possible.  for me, exercise, yoga, and planned boredom help treat the internal distractors.