GEN1131 The second aspect of enthusiasm involves finding and expressing the energy needed to complete a task.  As important as it is to be quick off the mark, it is equally important to sustain energy throughout the whole enterprise. … the sages said, “A mitzvah is judged only upon its completion.”   Kiddushin 40a.  As much as we like to comfort ourselves otherwise, good intentions are not enough.   MORINIS 128