I love this Commencement Address given by Admiral William H. McRaven which he gave in UT Austin in 2014.  It is truly inspirational and I dust it off and watch it now and then for a boost.

Remarks by Naval Adm. William H. McRaven, BJ ’77, ninth commander of U.S.Special Operations Command, Texas Exes Life Member, and Distinguished Alumnus. This retiring Admiral and Navy Seal trainer delivers one of the most inspiring and uplifting speeches you will ever hear. Credit: Goalcast.