Taking ownership of your happiness has two aspects: Accepting that being happy is up to you and that you have the ability and power to be happier by changing your habits. Taking "response-ability": responding to all the events in your life in a way that supports your happiness.
Marci Shimoff, Carol Kline (2009). “Happy for No Reason: 7 Steps to Being Happy from the Inside Out”, p.50, Simon and Schuster
