Subhojit Roy, MD, PhD recently wrote an interesting post on his journey as a immigrant physician-scientist in the United States. Here's the link. His conclusion:
"Some amount of foresight and planning is obviously important for success in any field. But most successful careers do not follow a prescribed trajectory. It’s debatable whether meticulous career forecasting and vetting is any better than planning for the future in broad strokes, leaving some things to chance, and believing that one always has the power to make a change. Life is an exploration, not a Cuneiform tablet. And there is no such thing as the right career path."