Businesses often carry out their planning in quarterly units. In our personal lives, we are conditioned to think in terms of the four seasons, which are based on the solar cycle. Each season (fall, winter, spring, and summer) is three months long.
The quarterly unit seems to work for organizations. Organizational plans require the mobilization of a wide range of resources.
But three months is a long stretch for mid-range planning for the individual. When one three-month period passes, the year is 25 percent gone. Two such periods and the year is half gone.
Some people therefore try to base their short-range plans on the calendar month.
The calendar month, though, is too short a period when attempting to implement a plan of any real complexity. Seldom can the results of any new initiative, change, or focus be meaningfully observed within a 28- to 31-day calendar month.
I've found from experience that it makes sense to base your individual short-range plans on increments of two months.
At the personal level, the quarter or season is too long to be truly short-range, and the calendar month is too brief--even for short-range planning purposes.
Two months is just right.