According to Osho, yes: a shock of mortality—when death’s arrow pierces your heart—is indispensable for real transformation. Death awakens intelligence, makes life’s vanity transparent, and compels the search for the deathless. This encounter may be one’s own crisis or the lucid witnessing of others’ deaths; then life becomes a doorway, a disciplined preparation for the supreme, endingless life.
When you truly feel everything will end, you wake up and start seeking what cannot die inside you.