anand iyer , 36 , was earning six figures at threadflip in san francisco .
he realized he did n't get much time to see his daughter , 2 , ava .
he felt awkward at the playground and ava was asleep when he got home .
quit his job to be house-husband , says it 's ` the best investment '
his wife shreya , 34 , now supports the family as a recruitment manager .