Here's a very useful paper from the ONS for anyone working with well-being measures in large data-sets:
The Measurement of Well-being: the Contribution of Longitudinal Studies.
It has an overview of the main British cohort studies, which follow groups of people from birth throughout their lifetime:
It has an overview of household, individual and census-linked panel studies which follow groups of people starting in adolescence or adulthood:
It also has many tables summarizing the different well-being questions available in all these studies, such as this one looking at different measures of life satisfaction: