Don't be hard on yourself because it didn't work out. I don't know if we are better at dealing with things when younger, or if we are just oblivious to the hardship, but living away from home is really stressful. I haven't lived overseas, but in all my moving around in the US, including living on a tall ship for a month (in port), I know it wears me out. One time when I was on the boat I had a dream about my cat and woke up crying. I felt like I was on the "Sloop John B." The way you think about it rationally doesn't seem to matter. You can think, it's just a fun summer in Chile, but the rest of your person may feel like, "Ack! Get me out of here, I need to go home!" It used to be that the only people going to Patagonia or Tierra Del Fuego were intrepid explorers.

A therapist told me that it takes two years on average to mourn a parent. My dad died about five years ago, and there are times I still get upset about it. When you get hit by a bunch of stuff it wears you down. It's normal.