Which decision paid off only after many years, when its value could not yet be proved?

I've had some downturns in my career and various problems, but in fact all those kind of problems turned into something even better. It's kind of amazing, various times in my career.

I was fortunate even from that point of view because I got a very good research collaboration agreement with Upjohn, the American Upjohn company. So that could help me to go on with my research.

And so, I went to Texas Tech El Paso. I could literally throw a stone out of my window and hit someone in Juárez, Mexico. And yet, it was the most beautiful place to practice, because in that county hospital we saw everything in young people, untreated; it felt very meaningful, but my evenings were mine to write and to develop my voice, and my weekends were mine. And I eventually got hired to Stanford in a roundabout way, largely because of that.

I would like to have been concerned about this existential threat sooner.