IMHO I believe art has nothing to do with IMpressing and everything to do with EXpressing. Unfortunately, we artists occasionally get ensnared in the impress part in order to make a living, ie catering to common demand, which is elusive and unpredictable at best.
You are familiar with the five ways of learning, yes? Many of us are visual learners. Visual images transcend barriers of language and culture, see Picasso's "Guernica" - it is an expression of wartime horror that has a global understanding.
Michelangelo, completed an astoundingly beautiful sculpture from marble, called the "Pieta", before the age of 27. He said he simply released the figures the from the marble They were always there. His masterpiece is an exquisite visual expression of tenderness, love, faith, and sorrow, to name a few. Some claim divinely inspired.
Van Gogh sold only one painting while he lived, even though he produced over 900. If he was set on impressing he may have given up at 20? Yet today he is world renown for his expression.
To each his own though, we are all entitled to that.

Yebba - The Age of Worry

https://www.youtube.com/watch?v=x1ya5YigHok

Yes, it takes an incredible amount of focus to produce good art. Hundreds of decisions are made within a few hours. The ideas and images evolve very quickly, funneling through thought processes and pushing the medium to it's limits. If there are interruptions, it is hard to get back to the train of thought. Time becomes irrelevant.
It's all good. When asked when a painting is done, the response is "A painting is never done, it just stops in interesting places."