I visited a candle holder five or six times before I bought it last year and put it into my Christmas stocking. It wasn't expensive--about $6, but I don't like to buy things and not use them--getting rid of stuff worries me: landfills, etc., and keeping unused clutter around in our small Japanese home makes me crazy. But after visiting the candle holder in the store so many times, I decided I had a real jones for it, and got it.
Now I put a candle in my little holder and light it before I write. Different candles--some scented, some not. I even got an LED candle for it (and decided I preferred the smell and warmth of a real candle). I don't know why, but having it in front of me focuses me as I write. I can write for a longer period of time and with greater concentration and purpose when I look and see my candle burning there in front of me.
Can't explain it, but there it is.
New year, new habit, better writing.