Yes, I never understood the thing about 5-year plans, 10-year plans, etc. The idea of having one stresses me out too much! 
Things I thought I would be when I grew up: a writer (I was writing 'books' when I was 6-7 years old), then an actress/singer (I used to put on one-girl variety shows out on this raised cement slab in our backyard - the roof of the storm cellar), then a psychoanalyst (I read the book Sybil when I was about 9 or 10 years old), then a journalist, then a social worker, before finally getting a degree in - history. Lol!
Great stories everybody! Hope people will keep posting stuff. 
Some of the things you wanted to be sound familiar--writer, journalist....I did a similar thing with the variety shows on the side of our house.
The idea of 5 and 10 year plans stresses me out as well and I've never made a plan like that. I don't like the idea of life happening passing me by or happening while I make other plans, etc, so maybe there is some sort of comprimise?
In my late teens, early twenties I had a vague idea of what I thought my life would bring me. I pictured myself as an artist (it changed from commercial art to fine art) in the big city (NYC or Philly or Chicago) and didn't want to have kids or a husband. That was as specific as it got.
Anyway, I've always had a sense of adventure and risk (not as big as some people's though!) so if there was something I wanted to do or try, I did. At 19 I realized I wanted to be an artist and knew that meant I had to get out of the college I was currently attending and get my portfolio together and try to get accepted to an art college. I did and it was one of the happiest days of my young life! About 15 years later I decided I didn't want to pursue a career in art and decided to try music just for the heck of it--and learning music was the biggest and most dramatic thing I've probably done (besides move to the UK). It has changed my life immensely, and is not anything my 19 year old self would have expected.
My 19 year old self would not have expected to have been married and divorced, either. But those years were actually good for the most part and I was in a band and worked in a stimulating, fun hippy environment, etc. My younger self would have thought it was really cool, but again, unexpected.
My younger self would have cheered me on when I decided to go for it, leave everything (job, apartment), and spend the summer in Ireland (something I really wanted to do for a long time) after my divorce was final.
And like someone else here said, I didn't just want to travel but I wanted to live in another country--preferably Ireland or England, and that is magically what happened!
I am having my ups and downs of course and still am not sure what I want to be when I grow up, and I think my younger self would be sad about that and sad that I haven't felt at all inspired by my music lately (the very thing that brought me to Ireland and how I met my now hubby).
