will hatton has travelled to about 50 countries in seven years and plans to make it to 100 by the time he is 30 .
the 26-year-old backpacks , hitch-hikes and dumpster-dives in order to keep to his budget of us$ 100 each week .
he picks up odd jobs as he goes , including goat herding in the middle east .
his adventures have led him into tricky situations , including being robbed at knife point and strip searched at gun point .