“It’s Better to Light a Candle than Curse the Darkness”

 

"It is better to light a candle than curse the darkness" is meaning better to do something about a problem than just complain about it.

Further, a candle is a small answer to a large problem, but it is still a worthy step in the right direction, rather than just bemoaning the problem (of darkness).

Means if you can change a bad situation it's better to do that than to complain about it.