In honour of the Sun's transit of Leo, here's the Tarot card associated with this sign; appropriately enough, it's The Sun.
When this card is pulled in a spread, people sometimes expect unadulterated joy. It can be a happy card, but I've found that it usually refers to happiness that comes from absolute clarity. This is the card of illumination. The big "Now I get it". The light from the Sun is bright, and there's no place to hide.
But it's a positive card, so the clarity is usually not an unpleasant shock. It's about what you must know to get the best out of a situation. Once you understand, you're unencumbered by illusion/paranoia/deceit, and that's when you can access the good stuff.
If it's reversed, it can signify the rampant ego associated with Shadow Leo, and the twisted logic that stems from that.
The card that's pictured is from the Mystic Dreamer deck, created by Heidi Darras and Barbara Moore.