For example, the act of using a gratitude journal each day for a month has been shown to have a 10 percent increase on subjective happiness. (mindbodygreen.com)
So if someone says, like Alan, that he would rather live in the second, non-deceived world (as most of us would) he is committing himself to saying that something beyond subjective happiness is important to him, namely the «objective worth» of his life and whatever he accomplishes in it. (religion-online.org)
From her firm belief that it is each person's self - reported happiness that matters, she developed a four - question Subjective Happiness Scale. (scientificamerican.com)