A lit candle suggests that you are unconsciously seeking comfort and some sort of spiritual enlightenment.
An unlit candle suggests that you may be feeling rejection and disappointment or can’t see anything positive or “light” in a situation or in yourself.
If in your dream you watch the candle burn down to nothing, it suggests that you may have fears of getting older and dying.
For men it may connote a fear about waning sexual abilities ... The Bedside Dream Dictionary