Genetic research suggests that our fun preferences are largely inborn and remain consistent throughout life.
In your trusty notebook or Oprah.com Journal, begin listing things you remember enjoying as a child. Pay particular attention to things that made you "lose time," so that hours seemed to disappear in seconds. What absorbed you completely? You may want to ask family members, whose recollections can jog your memory.
Next, look for patterns in this childhood fun. Did you like playing alone or with others? Inside or outside? Calmly or roughly? With words, objects or actions? Choosing careers, avocations and personal activities that fit this code will make you happier and more purposeful across the board.