Your imagination is your preview of life’s coming attractions.
~ Albert Einstein
It’s part of why visualization works. Our thoughts are all translated into images and those images are dress rehearsals for our life. For example, if you continually imagine hardship you are rehearsing hardship. If you imagine ease, fulfillment and joy you are rehearsing it which then gives it a better chance of happening.
When you are thinking about a race and you imagine it being joyful, fulfilling and fun then you are rehearsing these images and feelings ~ marinating yourself in it and basically manifesting it to happen.