Something else I learned is that mental imagery[1] isn’t limited to just visual experiences. As a musician, I use it to hear intervals, hear the strong beat, hear chords, different timber / sound textures etc. You can also "visualize" smells, physical sensations, and more. I clearly see it as a skill that improves with time and effort.
One nice trick is being able to visualize conversations, dialogues, interviews etc. I believe it dramatically helped me overcome stress in those situations, as well as in performance.