On the first of each month I would start a new painting and paint it ONLY for the duration of that month.  For 2017 I found a strategy to stay within the square format.  I am revisiting each month again in turn in 2018 to work them more, as needed, and to break out of the square.

Months Squared: January 2017 (left) 2018 (right)
oil on panel
20 x 16
MONTHS SQUARED 2017- ongoing