Do you agree that your focus truly shapes your reality?

Do you agree that your focus truly shapes your reality? Have you consciously used this to shape your day?
“Your focus determines your reality” Qui-Gon Jinn in Star Wars: Episode I – The Phantom Menace. – Alma 41:4-6 – Alma - Jedi Masters Holocron
Section IX - Interesting Items from the Study Guide to the Jedi Masters Holocron