More is More: But when it comes to costuming, more is more. And not just your costume, don't forget stage appropriate make-up, hair, and accessories. BE SHINY.
Be inspired, but be you, which sounds easy but is very difficult. Imitation is easy and short-lived.
There is always more to learn. If you think you have learned everything there is to know about bellydance, you're nowhere near the finish line (of which there isn't one anyway), and especially NOT BETTER than anyone else.
The One & Only Truth: For every "truth" in bellydance, there are at least 3 supporting facts and at least 3 facts that also disprove it. Culture is always in flux and history is full of nuance. If anyone says their way is the ONLY way, they're wrong. Move on.
The most likely cause of losing your love for the dance doesn't come from within, it's almost always an external influence. Remove those influences and seek new inspirations, and you'll find a renewed sense of love. If you let others take the joy from you and you do nothing to change it, then in the end, it falls on you, not them.
Always wear underwear. Always. If it involves a stage or performing for anyone besides your cats...wear underwear. I mean it. No butts.