The defination of Satisfaction is different for every person.

Some one get satisfaction by achieving their goal.
Some one get satisfaction by earn more money (which is an endless process)
Some one get satisfaction by making them popular or in lime light by hook or crook (like Shahrukh khan).
Some one get satisfaction by delievering uneven or faltu statement (negative publishity!!!) like Rakhi Sawant.

But Peace of Mind is necessary no matter how u get satisfaction.