I confess, I loathe sun sign talk.
Let me explain. I cannot stand the flip explanations people give for why one acts a certain way based on one's sun sign. 'O she's a Gemini, she 's talkative, bright, and witty!' 'That Scorpio, he's secretive, complex, and intense.' 'Geminis and Scorpios could never make good life partners!' Now, to some extent, these descriptions can be true. However, complicated humans cannot be so simply described. The sun sign is a teeny tiny aspect of your personality.
First, you really need to take another look at what the sign your sun is in truly means. Your sun sign is not the instinctive part of your personality. It is the part you are trying to become.