This quote belongs to Leroy Robert “Satchel” Paige (1906 – 1982).
You have one life to live! There are no “dress rehearsals” in life. This is it! No one comes back to right the wrongs. You do not have a second chance to seize these opportunities and make them work for you. Engage in every moment; time is everything. Every second, minute, and hour that you are not involved in some productive activity is wasted and gone forever. Make the most of every experience, and savor it for now and the future!