I am currently reading a biography of the almost supernaturally gifted inventor Nikola Tesla. Most of the devices he invented he would envision fully functioning in his mind before he built them. In this passage he describes one of his visions and his formula for success.
“The pieces of apparatus I conceived were to me absolutely real and tangible in every detail, even to the minutest marks and signs of wear. I delighted in imagining the motors running…When natural inclination develops into a passionate desire, one advances toward his goal in seven-league boots.”