The meaning of life asks the question, "Why are you here?"
The purpose of your life asks the question, "What are you going to do now that you are already here?"
We have many life purposes. Some we don't even need to try to fulfill. Some require a lifetime of work. And if the meaning of life is to experience happiness, then the ultimate purpose of your life is to actively find deep, lasting happiness.
Learn about life purposes at
http://www.kristensguide.com/Happiness/purpose.asp