Everyone knows that Leo loves attention. Look at the center of any cluster of dancers in a club, and there's probably a Leo there. But it's not just an ego thing with you.
You really need the limelight, much like a flower needs water and sunlight to bloom. You come alive when others are paying you compliments, and are able to reach your highest potential this way.
While other signs may not always get this need, you know some of it may be jealousy. Maybe they'd like to be where you are, but don' t have the guts.