Cheap travel is an art. Focusing on free entertainment like concerts in the park, museums and sunsets, walks along a famous river, eating the main meal at lunch instead of dinner will all save you big bucks in the long run on your trip of a lifetime.
Take buses instead of taxis, bring fruit, nuts and bottled water along in your purse or backpack, and enjoy the local pubs and diners instead of the most expensive restaurants.
Purchase small items like stamps, pens or postcards to bring home as gifts. You can learn to be a budget traveler while traveling like a king.