By Beth Germano BOSTON (WBZ) -- Boston barber Steve Silva says he knows he’s a lucky man. “Half inch to the left lucky, maybe even less,” he said. That’s how close it came to a life-threatening injury as he said he suddenly tripped as he cut a client’s hair last Friday at Boston Barber on Beacon Hill. “When I slipped I put my hands out, my scissors were over my right ring finger extended in, and I put my hands out to catch my fall,” said Silva. That’s when the scissors punctured his chest as he went down, surveillance video shows him kneeling on the floor as a co-worker and client rushed to help likely saving his life. “One got paper towels, one got regular towels and they were switching them back and forth,” Silva said.