Mastering the trait of enthusiasm/alacrity (zerizus in Hebrew) is essential if we are to realize our great potential in this world! It is a fundamental pillar of Jewish ethics and self-development, exemplified in the actions of our holy and righteous ancestors in all generations. We must always strengthen ourselves to transcend our natural, physical "heaviness" and sluggishness, and speedily grab on to the good deeds and mitzvot that nourish and express our spiritual essence (and elevate the whole world). You cannot ever afford to CURB YOUR ENTHUSIASM--my apologies, Larry D.--or you may easily lose those precious opportunities for growth that present themselves to all of us each day.