Come on peoples... don't be a lurker... post something
Yes, there is a very different sense of time and urgency where you will be going (no matter where that is). One of the most valuable things you will learn is also the most frustrating - that a different culture works on its own timeline, not yours. I learned to recognize an immediate need and pitch in right then and there. It is what your host country people see as immediate, not what you do! Pitching in (a community dinner, repairing someone's roof, whatever is happening in your village) let me meet people in a new context, and they learned that I have a work ethic and included me in other things. You probably won't get to do the projects you think are the most important, because your host country people decide the priorities. It may be said elsewhere in this forum, but we learned early to "put lots of pots on the fire, and stir the ones that boil."