Zachary Hofer started out welding go-carts with his dad in their garage. Now at 25, he's opened his third shop. "I've yet to find somebody as young as me doing this type of work." Jeannean Mercuri is 4 foot 10 and makes her living trimming the hooves of horses that can weigh up to 2,500 pounds. "I'm a total hoof nerd." Meet them and see the stories of more LIers who love their jobs below.