The peace that comes from finding ones vocation (or at the least, when one finds the grace of discernment of a vocation) is like having a sword, dull and wooden as the Cross, plunged into your heart, where it is anchored into the Heart of Jesus. It is in this way that vocation brings peace, for it is anchored firmly in love, the security and safety of being in love.
But what is not foreseen is that an act of love of a Creator entering into and becoming one of his own creation cannot happen but through violence. Instead of bringing earthly peace, the true vocation -- which is the face by which God wins over the heart of his beloved -- opens chasms of torrents and uncertainties, as well as graces and blessings. But, in the grace of vocation, one has eyes to see through the storms the towering pillar that is the love of God.