It is better to light one candle than to curse the darkness. Chinese proverb.
But why not multitask?
I think it's fine to silently curse the darkness the whole time you're lighting your candles. (Why stop at one?) Get it all out of your system. It's a soothing ritual for head and heart, it's far less annoying than yoga, and you get to play with fire before sitting down in solitude and (let's hope) a little less darkness. No matter what you believe.
St. Clement's Shrine is a peaceful Gothic church on Boylston Street near the Fenway. In the back, you'll find hefty candles, for a $2 donation.