It’s never too early to think about the Third Goal. Check out Peace Corps Experience: Write & Publish Your Memoir. Oh! If you want a good laugh about what PC service was like in a Spanish-speaking country back in the 1970’s, read South of the Frontera: A Peace Corps Memoir. The author was a PCV urban planner!
Thanks for the advice. I may check out that book. I'm working on a book, right now, about cities. Many of the same problems face Latin American cities as US cities. I didn't blog about this, but there was an 8 year old boy killed by a car in front of my house in El Salvador.