It is easy. Let go of all the things that make you unsatisfied. You do not need a bigger TV, a more powerful sterio, a fancy car or anything else that you are told to buy. Faster smart phones, faster computers, latest big label video game...all that is irrelevant. Let it go and be happy with what you have. Then you will be satisfied.
Get a job that you enjoy and make sure you have benefits such as retirement and health insurance.
try your best