To save money you need to know how to spend wisely the money that you get from your job and you need to control yourself from spending too much.
I think the controls themselves is a difficult thing. That's why many people prefer to buy anything or spend than save money. people prefer extravagance nature is very difficult to remove it
It really depend on the people life style they are with,if you are born rich then saving might be hard for you but if you are born with just a significant amount of money in your family then saving money wont be hard for you.