What is a very important skill a person should learn in order to be successful in the world?

A person who wants to be successful in the world should learning about some important skills, and I think that learning how to use the computer is the most important skill in this explosive information world. Maybe you would thinking of that how does a computer make a person to be successful. Nowadays, the computer is a necessary for everyone and it does lots of things come with latest information and efficiency. Most of company depended on the Computers to deal with their affairs through the internet; therefore, it reduced both time and cost of information transmission.