“Anything you may hold firmly in your imagination can be yours.” ― William James
“Everyone knows what attention is,” wrote William James in his Principles of Psychology (1890). “It is the taking possession by the mind in clear and vivid form, of one out of what seem several simultaneously possible objects or trains of thought…It implies withdrawal from some things in order to deal effectively with others, and is a condition which has a real opposite in the confused, dazed, scatterbrained state.”
https://www.rxlist.com/attention/definition.htm
https://en.m.wikipedia.org/wiki/Attention_economy
https://plato.stanford.edu/entries/attention/
https://firstmonday.org/ojs/index.php/fm/article/view/519/440
https://journals.sagepub.com/doi/10.1177/1440783318812111
https://www.researchgate.net/publication/329224124_The_economy_of_attention
https://link.springer.com/book/10.1007/978-3-030-41532-7