The word for tomorrow in hebrew is מחר which has the same root letters as the word רחמים ,mercy, a lesson in the connection could be
That no second, no hour, no day is guaranteed and if you are granted another day see it as a blessing, a miracle ,a gift, a sign of G-D'S loving mercy and pour your best version of you into each day and let that be a sign of your gratitude, your gift to G-D