"I am so happy & grateful" is a personal affirmation or sentiment expressed by the person who lit the candle, perhaps as a form of gratitude or a declaration of happiness.

It represent the essence or ambiance of a candle. Candles often symbolize warmth, comfort, and positivity. So, "I am so happy & grateful Candle" could suggest finding joy and appreciation in simple things, like the soft glow of a candle, and being content with what one has.