Tikkun, mending, is the Lurianic answer to the breaking of the vessels: by observing the commandments and praying with intention, Jews raise the fallen sparks and restore the divine harmony, hastening redemption. The phrase tikkun olam, repair of the world, is now often used for social action.
Tikkun
Repair: the restoration of the broken divine order through prayer, commandments and right action.
Also: tikkun olam