Momentous events in your life such as having children, or getting married, may make you happier, but only temporarily, say researchers.
Our basic happiness level essentially stays the same throughout adult life, the Economic Journal reports.
Economists from the UK, US and France based their conclusions on a 20-year analysis of the life satisfaction of hundreds of people from Germany.
Even after traumatic events, overall mood dipped but then recovered.
BBC NEWS | Health | Happiness 'immune to life events'.