This question is simply answered. Anywhere you like!
We had spent six years talking about going on a round the world trip and only eventually got around to doing it when we set a date and handed over the cold hard cash for the ticket.
Our advice would be not to spend years talking about a trip that you may regret not doing but put a plan in place to scrape together the cash, get to your local travel agent or trusty website and book it.
This will focus your mind and things will fall into place.
Have a look at our Itinerary and Planning section for tips on how to plan your trip.