The jinx

Rachel Benjamin's life might look glamorous, but she has worked into the early morning on more nights, cancelled more weekend plans and slept in more Holiday Inns in small industrial towns than she cares to count (standard practice in the business of mergers and acquisitions). And that picture of her on the recent cover of Fortune? It inspired a reprise of her grandmother's favorite lecture, the one titled "You don't want to be one of those career gals, do you?" (Other popular hits include "Have you met anyone nice?" and "I just want to go to your wedding before I die.") But this week…