Answer:
Vivid vision.
Explanation:
When someone involves in vivid vision, they visualise future expectations of a particular activity. This is done with the aim of conditioning the mind to achieve the picture painted in the mind's eye.
Kilian took some time out to think on his ideas. He went to a friend's cabin and imagined how the business will look like in 3 years, including how customers will use his product.
He is trying to use vivid visualisation to condition his mind. This will motivate him to achieve his goals.