Because in the end, you won’t remember the time you spent working in the office or mowing your lawn. Climb that goddamn mountain.  – Jack Kerouac First Stop: Santa Marta I spent most of the last week hiking the Ciudad Perdida (literally ‘Lost City’) trail in the Sierra Nevada mountains in Colombia.  It was breathtaking and totally exhilarating.  At times I also thought I was going to keel over and die right there on that mountain.  And for the first time in my travels, I felt kinda old.  And weak.  For the record, I am neither of these things.  But it’s fair to say my week included an abundance of…