My birthday is in November, and every year before the month ends I take stock of what the previous 12 months have brought.  Although each year is different from those before and almost certainly will be different from those to come, one absolute truth is that each November I am one year older.  Aging inevitably means changing, and neither our lives nor our careers escape the effects of aging. 

As we age, new career dilemmas appear, especially for those in career transition.  Should you stay...