here is a useful trick i use for a while: if you prefer thinking by writing try writing only the first letter of each word and without punctuations. you still get the benefits of thinking by writing but you are free from typing the tail of the words. this allows you to immediately focus on the next word or thought. first time you might realize being slow, brain pauses to finish the word instead of thinking the next one. but you get used to it. you wont be able to reead what you wrote but that is not important for this exercise. i think the main goal for this is to put the brain on a rail and think the thoughts. that is how writing helps me.
there are a few variations i am experimenting:
examples (first paragraph of this page with this method):
h i a u t i u f a w i y p t b w t w o t f l o e w a w p y s g t b o t b w b y a f f t t t o t w t a y t i f o t n w o t f t y m r b s b p t f t w i o t t n o b y g u t i y w b a t r w y w b t i n i i t t m g f t i t p t b o a r a t t t t i h w h m
hiautiufaw iyptbwtwotfloewawp ysgtbotbwbyafftttotw taytifotnwot ftymrbsbptftwiottno byguti ywbatrwywbtini ittmgftitptboarattt tihwhm
hiautiufaw iyptbwtwotfloewawp ysgtbotbwbyafftttotw taytifotnwot ftymrbsbptftwiottno byguti ywbatrwywbtini ittmgftitptboarattt tihwhm
hiautiufawiyptbwtwotfloewawpysgtbotbwbyafftttotwtaytifotnwotftymrbsbptftwiottnobygutiywbatrwywbtiniittmgftitptboarattttihwhm