Usually if someone earns a middle class income they have just enough money to live off of and take a vacation or two each year. They do not usually have enough money to travel around the world. However some people are considered to have a middle income but they have money saved in their account due to an inheritance. If you don’t have an inheritance and you don’t have a lot of money there are things you can do to travel around the world. One way is to say that money up.
At this point you could get another job and work this part time job to save it up in a few years in order to travel around the world. Another way is to plan to work while you travel around the world. You could be a travel blogger or you could find odd jobs along the way.