I read this in my bro's Chevening British Scholar Guide for International Students. I bet he never read a sentence!
As per research, the 'W' is how you will feel/your mood will swing, when you get to any new place. You will first be excited to see the new place, meet new people, which will slowly be followed by loneliness, and you feel homesick. You then hit rock bottom in the first dip of the letter 'W'. Then you get along, get used to the change, you make friends, start liking the place and getting settled, you reach the second high in 'W'.
Here's the next downturn, you get back to your homeland, you miss the place you had just been. Miss the friends, the place, people, the lifestyle. Long for it. You hit the second rock bottom..Then you get used to the change, your old life, get settled and reach yr peak high.
I guess, it is applicable to any change a person might have in life. The challenge is never to stay long enough on any of the rock bottoms, but to bounce back with full strength, knowing a low will always have a high following.
Okie, am up on the second high.. and I know what to expect now :)