Sfira is a time for working on our character traits. A person is compared to a small village. Using our koichos (abilities) in the right way, place and time. Not reaching our potential. Menuchas Ha'Nefesh is usually not genetic; we have to work for it. The definition of Menuchas Ha'Nefesh. LIving in the moment - this day, this hour! The tefilah we are now davening never has been before, and never will be again. When we live too much in the past or in the future.