I’ve come to that cross-road in a writer’s life where she has to choose between writing what she wants and writing what earns her bread. It might even be one of those modern five-way stoplights where several roads merge and one must decide whether to turn gently to the right, to join the path ahead, or — most alarming of all — veer to the left and go against the traffic, hoping for a break in the rush to slip across. What to do? And I think I might go for the difficult and risky choice. This is absolutely one of those moments where, if speaking to young writers, I…