My experience has been similar. I found in the short term I too wasn't transformed but after 15 years it is more apparent that the small changes that did take place during my travels have greatly shaped my life. A few things I can think off of the top of my head are: 1) I own few very things 2) I am far more frugal (especially when it comes to food.) 3) I take risk. 4) I value friendships as a great source of happiness. Little of of this was in my upbringing.