Extreme amounts of willpower. I suffer this same predicament. D:

Extreme amounts of COFFEEEEEEEEEE!!! >:D

tho, depression can affect creativity like that too..

what i do is is I sit my tail down put on some movie or vid that I've seen a few times so i know wont distract me visually, i enjoy enough to want to watch it again. or sometime i find a vid of one of my favorite V-loggers and listen to him or her rant while i focus on my work. what also helps are books on tape, it kinda keeps you mind distracted enough to not wander but not so much that you cant focus on what your working on. if anything it might give ya some good inspiration from time to time.