Authors:

As you grow older, it becomes harder to feel 100 percent happy; you learn all the things that can go wrong, you become superstitious about tempting fate, about bringing disaster upon your life by accidentally feeling too good one day.

Douglas Coupland (1993). “Shampoo Planet”, p.131, Simon and Schuster
As you grow older, it becomes harder to feel 100 percent happy; you learn all the things that can go wrong, you become superstitious about tempting fate, about bringing disaster upon your life by accidentally feeling