My friend and former manager Brian Weinberger while I was at Segment is my guest contributor to today’s blog post.  This story is special to me for so many reasons.  And today of all days it’s perfect mojo for all you hustlers closing out your month, or your fiscal today!  Good luck to everyone!  First, it’s a true and unedited description of the real sales hustle and the emotional high’s and low’s that we all live day to day when we’re closing a deal – all the while wondering if we are going to make our number, be a contributor,…