MLP Tarot — The Sun
Like Luna, Celestia is the most obvious embodiment of the Sun Arcana. While in the upright position the sun represents joy, success, and celebration. She shines love down upon her subjects and for a long time was the main reason the Equestria was successful. The ponies celebrate her like no other. It also inspires confidence in decisions and helping other reach their goals as well.

However in the reversed position, the sun means just the opposite negativity, depression, and sadness. This is seen when Celestia doubts her decisions, can't fully connect to her subjects and generally feels lost about the situations that she finds herself in. This can point to bouts of over confidence in life and possibly even being unrealistic about the goals you've set for yourself.